RHSA-2026:69837
Vulnerability from csaf_redhat - Published: 2026-09-22 04:07 - Updated: 2026-09-22 15:41Summary
Red Hat Security Advisory: kernel security update
Severity
Important
Notes
Topic: An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details: The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns (CVE-2026-31692)
* kernel: fanotify: fix false positive on permission events (CVE-2026-46150)
* kernel: netfilter: conntrack: remove sprintf usage (CVE-2026-53002)
* kernel: tipc: fix double-free in tipc_buf_append() (CVE-2026-52993)
* kernel: zram: fix use-after-free in zram_bvec_write_partial() (CVE-2026-53185)
* kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888)
* kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf (CVE-2026-63887)
* kernel: Kernel: Remote out-of-bounds write in RDMA/siw (CVE-2026-64268)
* kernel: sctp: don't free the ASCONF's own transport in DEL-IP processing (CVE-2026-64564)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
A flaw was found in the Linux kernel's rtnetlink component. An unprivileged local user, leveraging a user namespace, can exploit a missing `CAP_NET_ADMIN` capability check in the `rtnl_newlink()` function. This allows the user to create paired network devices in arbitrary network namespaces, including the `init_net` (initial network namespace). Such unauthorized creation of network interfaces could lead to unexpected network configurations and potential system instability or resource exhaustion.
7.1 (High)
Affected products
Fixed
72 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:bpftool-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:bpftool-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:bpftool-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:bpftool-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-0:4.18.0-477.168.1.el8_8.src | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-abi-stablelists-0:4.18.0-477.168.1.el8_8.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-core-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-core-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-core-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-core-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-devel-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-devel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-modules-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-modules-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-modules-extra-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debug-modules-extra-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debuginfo-common-ppc64le-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-debuginfo-common-x86_64-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-devel-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-devel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-doc-0:4.18.0-477.168.1.el8_8.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-modules-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-modules-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-modules-extra-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-modules-extra-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-libs-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:kernel-tools-libs-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
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| Unresolved product id: BaseOS-8.8.0.Z.E4S:perf-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:perf-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:perf-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:perf-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-perf-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-perf-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
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| Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-perf-debuginfo-0:4.18.0-477.168.1.el8_8.ppc64le | — |
Vendor Fix
fix
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| Unresolved product id: BaseOS-8.8.0.Z.E4S:python3-perf-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
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| Unresolved product id: BaseOS-8.8.0.Z.TUS:bpftool-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
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|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:bpftool-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-0:4.18.0-477.168.1.el8_8.src | — |
Vendor Fix
fix
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| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-abi-stablelists-0:4.18.0-477.168.1.el8_8.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-core-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-core-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-devel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-modules-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debug-modules-extra-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-debuginfo-common-x86_64-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-devel-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-doc-0:4.18.0-477.168.1.el8_8.noarch | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-modules-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-modules-extra-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-tools-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-tools-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:kernel-tools-libs-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:perf-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:perf-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:python3-perf-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
|
| Unresolved product id: BaseOS-8.8.0.Z.TUS:python3-perf-debuginfo-0:4.18.0-477.168.1.el8_8.x86_64 | — |
Vendor Fix
fix
|
Threats
Impact
Moderate
A flaw was found in the Linux kernel's fanotify subsystem. This vulnerability allows for a bypass of permission checks because the `fsnotify_get_mark_safe()` function may incorrectly return false for marks on unrelated groups. This could enable an attacker to perform unauthorized actions by circumventing intended security restrictions.
7.1 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Moderate
A flaw was found in the Linux kernel's Transparent Inter-Process Communication (TIPC) module. This vulnerability, a double-free, occurs when the `tipc_buf_append()` function incorrectly handles memory after a socket buffer (skb) reallocation. An attacker could potentially exploit this to cause system instability or a denial of service. In some scenarios, this type of memory corruption could also lead to arbitrary code execution.
7.0 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
A flaw was found in the Linux kernel's netfilter conntrack module. This vulnerability arises from the use of `sprintf` and insufficient buffer sizing in the `mangle_content_len()` function, which can lead to a stack-out-of-bounds write. An attacker could potentially exploit this memory corruption issue to cause a denial of service or other unspecified impacts.
7.0 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
A flaw was found in the Linux kernel, specifically within the zram module. This vulnerability is a use-after-free error, where the system attempts to use a piece of memory after it has been freed. This occurs when the `zram_bvec_write_partial()` function allows an asynchronous read to write into a page that has already been deallocated. Such a flaw can lead to system instability, causing crashes, or in some scenarios, could be exploited by a local attacker to escalate privileges or execute arbitrary code.
7.0 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Moderate
A flaw was found in the Linux kernel's iSCSI (Internet Small Computer System Interface) target functionality. This vulnerability, a heap overrun, occurs because the iscsi_encode_text_output() function does not properly check buffer capacity when processing login requests. A remote attacker could exploit this by sending a specially crafted login request with numerous key-value pairs, leading to a memory corruption issue and potentially a denial of service (DoS) on the system.
7.0 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
A flaw was found in the Linux kernel's iSCSI (Internet Small Computer System Interface) target subsystem. This vulnerability involves a buffer overread and a double-free error when processing iSCSI Text commands. A remote attacker could exploit these issues by sending specially crafted network packets, leading to a kernel crash or memory corruption. This could result in a Denial of Service (DoS) for the affected system.
7.0 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
A flaw was found in the Linux kernel's Soft iWARP (siw) driver. A remote attacker, by sending specially crafted Read Response segments that exceed the requested length, can trigger an out-of-bounds write. This vulnerability can lead to memory corruption, potentially causing a kernel crash or privilege escalation.
8.8 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. A remote attacker could send a specially crafted sequence of ASCONF (Add IP Address Configuration) chunks, including DEL-IP (Delete IP Address) parameters, to trigger a use-after-free condition. This memory corruption could lead to a system crash, resulting in a denial of service, and potentially allow for arbitrary code execution.
7.8 (High)
Affected products
Fixed
72 products, the same list as for
CVE-2026-31692
Threats
Impact
Important
References
57 references
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{
"cve": "CVE-2026-31692",
"cwe": {
"id": "CWE-272",
"name": "Least Privilege Violation"
},
"discovery_date": "2026-04-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2464093"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s rtnetlink component. An unprivileged local user, leveraging a user namespace, can exploit a missing `CAP_NET_ADMIN` capability check in the `rtnl_newlink()` function. This allows the user to create paired network devices in arbitrary network namespaces, including the `init_net` (initial network namespace). Such unauthorized creation of network interfaces could lead to unexpected network configurations and potential system instability or resource exhaustion.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-31692"
},
{
"category": "external",
"summary": "RHBZ#2464093",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464093"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-31692",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-31692"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-31692",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31692"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026043054-CVE-2026-31692-5f89@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026043054-CVE-2026-31692-5f89@gregkh/T"
}
],
"release_date": "2026-04-30T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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{
"cvss_v3": {
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"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: rtnetlink: add missing netlink_ns_capable() check for peer netns"
},
{
"cve": "CVE-2026-46150",
"cwe": {
"id": "CWE-280",
"name": "Improper Handling of Insufficient Permissions or Privileges"
},
"discovery_date": "2026-05-28T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2482612"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s fanotify subsystem. This vulnerability allows for a bypass of permission checks because the `fsnotify_get_mark_safe()` function may incorrectly return false for marks on unrelated groups. This could enable an attacker to perform unauthorized actions by circumventing intended security restrictions.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: fanotify: fix false positive on permission events",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This Moderate severity flaw in the Linux kernel\u0027s fanotify subsystem allows a local attacker to bypass security restrictions. An incorrect return value from `fsnotify_get_mark_safe()` can lead to unauthorized actions on Red Hat Enterprise Linux systems.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-46150"
},
{
"category": "external",
"summary": "RHBZ#2482612",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2482612"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-46150",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-46150"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-46150",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46150"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026052822-CVE-2026-46150-c96d@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026052822-CVE-2026-46150-c96d@gregkh/T"
}
],
"release_date": "2026-05-28T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: fanotify: fix false positive on permission events"
},
{
"cve": "CVE-2026-52993",
"cwe": {
"id": "CWE-763",
"name": "Release of Invalid Pointer or Reference"
},
"discovery_date": "2026-06-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2492437"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s Transparent Inter-Process Communication (TIPC) module. This vulnerability, a double-free, occurs when the `tipc_buf_append()` function incorrectly handles memory after a socket buffer (skb) reallocation. An attacker could potentially exploit this to cause system instability or a denial of service. In some scenarios, this type of memory corruption could also lead to arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: tipc: fix double-free in tipc_buf_append()",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-52993"
},
{
"category": "external",
"summary": "RHBZ#2492437",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492437"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-52993",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-52993"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-52993",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52993"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026062445-CVE-2026-52993-34a2@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026062445-CVE-2026-52993-34a2@gregkh/T"
}
],
"release_date": "2026-06-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: tipc: fix double-free in tipc_buf_append()"
},
{
"cve": "CVE-2026-53002",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-06-24T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2492329"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s netfilter conntrack module. This vulnerability arises from the use of `sprintf` and insufficient buffer sizing in the `mangle_content_len()` function, which can lead to a stack-out-of-bounds write. An attacker could potentially exploit this memory corruption issue to cause a denial of service or other unspecified impacts.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: netfilter: conntrack: remove sprintf usage",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "An Important flaw was found in the Linux kernel\u0027s netfilter conntrack helper for SIP. A local attacker with low privileges could trigger a stack-out-of-bounds write by sending specially crafted SIP messages, potentially leading to a denial of service or privilege escalation. This vulnerability requires the system to process SIP traffic through netfilter.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-53002"
},
{
"category": "external",
"summary": "RHBZ#2492329",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492329"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-53002",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-53002"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53002",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53002"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026062447-CVE-2026-53002-8577@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026062447-CVE-2026-53002-8577@gregkh/T"
}
],
"release_date": "2026-06-24T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the nf_conntrack_sip and nf_nat_sip modules from being loaded. See https://access.redhat.com/solutions/41278 for instructions.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: netfilter: conntrack: remove sprintf usage"
},
{
"cve": "CVE-2026-53185",
"cwe": {
"id": "CWE-364",
"name": "Signal Handler Race Condition"
},
"discovery_date": "2026-06-25T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2492735"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel, specifically within the zram module. This vulnerability is a use-after-free error, where the system attempts to use a piece of memory after it has been freed. This occurs when the `zram_bvec_write_partial()` function allows an asynchronous read to write into a page that has already been deallocated. Such a flaw can lead to system instability, causing crashes, or in some scenarios, could be exploited by a local attacker to escalate privileges or execute arbitrary code.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: zram: fix use-after-free in zram_bvec_write_partial()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "A use-after-free write can occur in zram_bvec_write_partial() when zram_read_page() is called with a parent bio and selects the asynchronous backing device read path for ZRAM_WB slots. The function can return while the read bio is still in flight, after which the caller updates the temporary page, writes it back, and frees it. The pending asynchronous read may then complete into the freed page, causing kernel memory corruption. For the CVSS the PR:L is used because triggering can be possible from a local user context once zram writeback is configured, for example through swap or block I/O activity, even though initial writeback setup is usually administrative.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-53185"
},
{
"category": "external",
"summary": "RHBZ#2492735",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2492735"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-53185",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-53185"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-53185",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53185"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026062556-CVE-2026-53185-0922@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026062556-CVE-2026-53185-0922@gregkh/T"
}
],
"release_date": "2026-06-25T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent module zram from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: zram: fix use-after-free in zram_bvec_write_partial()"
},
{
"cve": "CVE-2026-63887",
"cwe": {
"id": "CWE-120",
"name": "Buffer Copy without Checking Size of Input (\u0027Classic Buffer Overflow\u0027)"
},
"discovery_date": "2026-07-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2502447"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s iSCSI (Internet Small Computer System Interface) target functionality. This vulnerability, a heap overrun, occurs because the iscsi_encode_text_output() function does not properly check buffer capacity when processing login requests. A remote attacker could exploit this by sending a specially crafted login request with numerous key-value pairs, leading to a memory corruption issue and potentially a denial of service (DoS) on the system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-63887"
},
{
"category": "external",
"summary": "RHBZ#2502447",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502447"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-63887",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63887"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-63887",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63887"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026071940-CVE-2026-63887-cf4b@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026071940-CVE-2026-63887-cf4b@gregkh/T"
}
],
"release_date": "2026-07-19T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: scsi: target: iscsi: Bound iscsi_encode_text_output() appends to rsp_buf"
},
{
"cve": "CVE-2026-63888",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2026-07-19T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2502443"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s iSCSI (Internet Small Computer System Interface) target subsystem. This vulnerability involves a buffer overread and a double-free error when processing iSCSI Text commands. A remote attacker could exploit these issues by sending specially crafted network packets, leading to a kernel crash or memory corruption. This could result in a Denial of Service (DoS) for the affected system.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-63888"
},
{
"category": "external",
"summary": "RHBZ#2502443",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2502443"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-63888",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-63888"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-63888",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-63888"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026071940-CVE-2026-63888-a5d6@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026071940-CVE-2026-63888-a5d6@gregkh/T"
}
],
"release_date": "2026-07-19T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd()"
},
{
"cve": "CVE-2026-64268",
"cwe": {
"id": "CWE-787",
"name": "Out-of-bounds Write"
},
"discovery_date": "2026-07-25T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2507089"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Linux kernel\u0027s Soft iWARP (siw) driver. A remote attacker, by sending specially crafted Read Response segments that exceed the requested length, can trigger an out-of-bounds write. This vulnerability can lead to memory corruption, potentially causing a kernel crash or privilege escalation.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: Kernel: Remote out-of-bounds write in RDMA/siw",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-64268"
},
{
"category": "external",
"summary": "RHBZ#2507089",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2507089"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-64268",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-64268"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-64268",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64268"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026072559-CVE-2026-64268-629a@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026072559-CVE-2026-64268-629a@gregkh/T"
}
],
"release_date": "2026-07-25T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the `siw` kernel module from loading. Create a file `/etc/modprobe.d/blacklist-siw.conf` with the following content:\n\n```\nblacklist siw\ninstall siw /bin/true\n```\n\nAfter creating the file, regenerate the initramfs and reboot the system for the changes to take effect:\n\n```bash\ndracut -f -v\nreboot\n```\n\nThis mitigation will disable the Soft iWARP functionality, which may impact applications relying on it. A system reboot is required for the changes to be fully applied.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: Kernel: Remote out-of-bounds write in RDMA/siw"
},
{
"cve": "CVE-2026-64564",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2026-08-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2510890"
}
],
"notes": [
{
"category": "description",
"text": "A flaw was found in the Stream Control Transmission Protocol (SCTP) implementation within the Linux kernel. A remote attacker could send a specially crafted sequence of ASCONF (Add IP Address Configuration) chunks, including DEL-IP (Delete IP Address) parameters, to trigger a use-after-free condition. This memory corruption could lead to a system crash, resulting in a denial of service, and potentially allow for arbitrary code execution.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: sctp: don\u0027t free the ASCONF\u0027s own transport in DEL-IP processing",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2026-64564"
},
{
"category": "external",
"summary": "RHBZ#2510890",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2510890"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2026-64564",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-64564"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-64564",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64564"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64564-6762@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2026080404-CVE-2026-64564-6762@gregkh/T"
}
],
"release_date": "2026-08-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-09-22T04:07:07+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.\n\nRed Hat recommends treating all kernel errata as security-relevant. Given the kernel\u0027s fundamental role, any bug has a higher chance of impacting system security, even if that impact only becomes clear after a fix is published. Therefore, Red Hat prioritizes delivering fixes that improve our customers\u0027 overall security posture.\n\nBecause of this proactive approach, a patch may be associated with a CVE assignment at a future date. Retroactive CVE assignments are always documented in the corresponding errata and on Red Hat\u0027s CVE pages. We strongly advise against delaying updates, as doing so may leave your system exposed when protections are already available.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:69837"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the `sctp` kernel module from loading. Create a file named `/etc/modprobe.d/disable-sctp.conf` with the following content:\n\n```\ninstall sctp /bin/true\nblacklist sctp\n```\n\nAfter creating the file, regenerate the initramfs and reboot the system for the changes to take effect. Applications or services that rely on the SCTP protocol cannot use this mitigation and should prioritize applying the fix.",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: sctp: don\u0027t free the ASCONF\u0027s own transport in DEL-IP processing"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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