Vulnerability-Lookup

alsa-2026:33743

Vulnerability from osv_almalinux

Published

2026-06-30 00:00

Modified

2026-07-01 10:23

Summary

Important: kernel security, bug fix, and enhancement update

Details

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216)
kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)
kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189)

Bug Fix(es) and Enhancement(s):

[AlmaLinux 8.10.z] Add an .sbat section to the x86 kernel (JIRA:AlmaLinux-182788)
Incorrect message "NFS: Server wrote zero bytes" is shown in the logs (JIRA:AlmaLinux-147665)

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.

References

URL

Type

	https://access.redhat.com/errata/RHSA-2026:33743	ADVISORY
	https://access.redhat.com/security/cve/CVE-2026-23216	REPORT
	https://access.redhat.com/security/cve/CVE-2026-45984	REPORT
	https://access.redhat.com/security/cve/CVE-2026-46189	REPORT
	https://bugzilla.redhat.com/2440630	REPORT
	https://bugzilla.redhat.com/2481922	REPORT
	https://bugzilla.redhat.com/2482588	REPORT
	https://errata.almalinux.org/8/ALSA-2026-33743.html	ADVISORY

JSON

To clipboard

{
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  ],
  "details": "The kernel packages contain the Linux kernel, the core of any Linux operating system.  \n\nSecurity Fix(es):  \n\n  * kernel: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() (CVE-2026-23216)\n  * kernel: gfs2: Fix use-after-free in iomap inline data write path (CVE-2026-45984)\n  * kernel: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path (CVE-2026-46189)\n\n\nBug Fix(es) and Enhancement(s):  \n\n  * [AlmaLinux 8.10.z] Add an .sbat section to the x86 kernel (JIRA:AlmaLinux-182788)\n  * Incorrect message \"NFS: Server wrote zero bytes\" is shown in the logs (JIRA:AlmaLinux-147665)\n\n\nFor 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.\n",
  "id": "ALSA-2026:33743",
  "modified": "2026-07-01T10:23:57Z",
  "published": "2026-06-30T00:00:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2026:33743"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-23216"
    },
    {
      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-45984"
    },
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      "type": "REPORT",
      "url": "https://access.redhat.com/security/cve/CVE-2026-46189"
    },
    {
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      "url": "https://bugzilla.redhat.com/2440630"
    },
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      "url": "https://bugzilla.redhat.com/2481922"
    },
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      "url": "https://bugzilla.redhat.com/2482588"
    },
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      "type": "ADVISORY",
      "url": "https://errata.almalinux.org/8/ALSA-2026-33743.html"
    }
  ],
  "related": [
    "CVE-2026-23216",
    "CVE-2026-45984",
    "CVE-2026-46189"
  ],
  "summary": "Important: kernel security, bug fix, and enhancement update"
}

CVE-2026-23216 (GCVE-0-2026-23216)

Vulnerability from cvelistv5 – Published: 2026-02-18 14:21 – Updated: 2026-06-11 17:53

Title

scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()

Summary

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls complete() while holding the conn->conn_usage_lock. As soon as complete() is invoked, the waiter (such as iscsit_close_connection()) may wake up and proceed to free the iscsit_conn structure. If the waiter frees the memory before the current thread reaches spin_unlock_bh(), it results in a KASAN slab-use-after-free as the function attempts to release a lock within the already-freed connection structure. Fix this by releasing the spinlock before calling complete().

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/ba684191437380a07…
https://git.kernel.org/stable/c/8518f072fc9292141…
https://git.kernel.org/stable/c/275016a551ba1a068…
https://git.kernel.org/stable/c/73b487d44bf4f9294…
https://git.kernel.org/stable/c/48fe983e92de2c59d…
https://git.kernel.org/stable/c/3835e49e146a4e6e7…
https://git.kernel.org/stable/c/9411a89e9e7135cc4…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < ba684191437380a07b27666eb4e72748be1ea201 (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 8518f072fc92921418cd9ed4268dd4f3e9a8fd75 (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 275016a551ba1a068a3bd6171b18611726b67110 (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 73b487d44bf4f92942629d578381f89c326ff77f (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 48fe983e92de2c59d143fe38362ad17ba23ec7f3 (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 3835e49e146a4e6e7787b29465f1a23379b6ec44 (git) Affected: e48354ce078c079996f89d715dfa44814b4eba01 , < 9411a89e9e7135cc459178fa77a3f1d6191ae903 (git)
Linux	Linux	Affected: 3.1 Unaffected: 0 , < 3.1 (semver) Unaffected: 5.10.250 , ≤ 5.10.* (semver) Unaffected: 5.15.200 , ≤ 5.15.* (semver) Unaffected: 6.1.163 , ≤ 6.1.* (semver) Unaffected: 6.6.124 , ≤ 6.6.* (semver) Unaffected: 6.12.70 , ≤ 6.12.* (semver) Unaffected: 6.18.10 , ≤ 6.18.* (semver) Unaffected: 6.19 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

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                  {
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                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T20:40:21.955601Z",
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      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()\n\nIn iscsit_dec_conn_usage_count(), the function calls complete() while\nholding the conn-\u003econn_usage_lock. As soon as complete() is invoked, the\nwaiter (such as iscsit_close_connection()) may wake up and proceed to free\nthe iscsit_conn structure.\n\nIf the waiter frees the memory before the current thread reaches\nspin_unlock_bh(), it results in a KASAN slab-use-after-free as the function\nattempts to release a lock within the already-freed connection structure.\n\nFix this by releasing the spinlock before calling complete()."
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        {
          "url": "https://git.kernel.org/stable/c/3835e49e146a4e6e7787b29465f1a23379b6ec44"
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      "title": "scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count()",
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    "cveId": "CVE-2026-23216",
    "datePublished": "2026-02-18T14:21:53.699Z",
    "dateReserved": "2026-01-13T15:37:45.987Z",
    "dateUpdated": "2026-06-11T17:53:37.958Z",
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CVE-2026-45984 (GCVE-0-2026-45984)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:18 – Updated: 2026-07-01 12:05

Title

gfs2: Fix use-after-free in iomap inline data write path

Summary

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix use-after-free in iomap inline data write path The inline data buffer head (dibh) is being released prematurely in gfs2_iomap_begin() via release_metapath() while iomap->inline_data still points to dibh->b_data. This causes a use-after-free when iomap_write_end_inline() later attempts to write to the inline data area. The bug sequence: 1. gfs2_iomap_begin() calls gfs2_meta_inode_buffer() to read inode metadata into dibh 2. Sets iomap->inline_data = dibh->b_data + sizeof(struct gfs2_dinode) 3. Calls release_metapath() which calls brelse(dibh), dropping refcount to 0 4. kswapd reclaims the page (~39ms later in the syzbot report) 5. iomap_write_end_inline() tries to memcpy() to iomap->inline_data 6. KASAN detects use-after-free write to freed memory Fix by storing dibh in iomap->private and incrementing its refcount with get_bh() in gfs2_iomap_begin(). The buffer is then properly released in gfs2_iomap_end() after the inline write completes, ensuring the page stays alive for the entire iomap operation. Note: A C reproducer is not available for this issue. The fix is based on analysis of the KASAN report and code review showing the buffer head is freed before use. [agruenba: Take buffer head reference in gfs2_iomap_begin() to avoid leaks in gfs2_iomap_get() and gfs2_iomap_alloc().]

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-826 - Premature Release of Resource During Expected Lifetime

Assigner

Linux

References

13 references

URL	Tags
https://git.kernel.org/stable/c/1403989d1b502f4a2…
https://git.kernel.org/stable/c/1cae1bafdf9caa9b4…
https://git.kernel.org/stable/c/764c3c84b5683e608…
https://git.kernel.org/stable/c/d87268326b277af36…
https://git.kernel.org/stable/c/87d4954b5c59735a9…
https://git.kernel.org/stable/c/6d76febba07c40bcf…
https://git.kernel.org/stable/c/815ddd27c0c7171a9…
https://git.kernel.org/stable/c/faddeb848305e79db…
https://access.redhat.com/security/cve/CVE-2026-45984	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2481922	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:27789	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33743	vendor-advisoryx_refsource_REDHAT

Impacted products

16 products

Vendor	Product	Version
Linux	Linux	Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 1403989d1b502f4a2c0d0b42ccf1c25748442eff (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 1cae1bafdf9caa9b462b19af06b1a06902e4e142 (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 764c3c84b5683e608f43735c803a5f415046686c (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < d87268326b277af3665237ac76a73dd9fa8e21b4 (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 87d4954b5c59735a99ea98cb208d47130f6dce7d (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 6d76febba07c40bcf358f63216d36ea68cf1c215 (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < 815ddd27c0c7171a99fe802fdb19098ddef8b19d (git) Affected: d0a22a4b03b8475b7aa3fa41243c26c291407844 , < faddeb848305e79db89ee0479bb0e33380656321 (git)
Linux	Linux	Affected: 5.2 Unaffected: 0 , < 5.2 (semver) Unaffected: 5.10.252 , ≤ 5.10.* (semver) Unaffected: 5.15.202 , ≤ 5.15.* (semver) Unaffected: 6.1.165 , ≤ 6.1.* (semver) Unaffected: 6.6.128 , ≤ 6.6.* (semver) Unaffected: 6.12.75 , ≤ 6.12.* (semver) Unaffected: 6.18.14 , ≤ 6.18.* (semver) Unaffected: 6.19.4 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS (v. 8)	cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux CRB (v. 8)	cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 9)	cpe:/a:redhat:enterprise_linux:9::nfv
Red Hat	Red Hat Enterprise Linux Real Time (v. 9)	cpe:/a:redhat:enterprise_linux:9::realtime
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 10	cpe:/o:redhat:enterprise_linux:10
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6
Red Hat	Red Hat Enterprise Linux for NVIDIA 26	cpe:/a:redhat:enterprise_linux_nvidia:
Red Hat	Red Hat OpenShift Container Platform 4	cpe:/a:redhat:openshift:4

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CVE-2026-46189 (GCVE-0-2026-46189)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:36 – Updated: 2026-07-01 12:04

Title

RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path

Summary

In the Linux kernel, the following vulnerability has been resolved: RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path Sashiko points out that pvrdma_uar_free() is already called within pvrdma_dealloc_ucontext(), so calling it before triggers a double free.

Severity

7 (High)


                        
                          CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

CWE-1341 - Multiple Releases of Same Resource or Handle

Assigner

Linux

References

14 references

URL	Tags
https://git.kernel.org/stable/c/269967d7693304e1f…
https://git.kernel.org/stable/c/1df5711121cdc11e7…
https://git.kernel.org/stable/c/3a231c34c5bc3d3cf…
https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c…
https://git.kernel.org/stable/c/45d25e3ec17900bf5…
https://git.kernel.org/stable/c/0c63333ff97bd1275…
https://git.kernel.org/stable/c/935ee27d0904aa944…
https://git.kernel.org/stable/c/e38e86995df27f1f8…
https://access.redhat.com/security/cve/CVE-2026-46189	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2482588	issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v…	x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:33685	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:30848	vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:33743	vendor-advisoryx_refsource_REDHAT

Impacted products

18 products

Vendor	Product	Version
Linux	Linux	Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 269967d7693304e1f06ed2dff4ebbbeeb397cda4 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 1df5711121cdc11e76b889408fdbe459feba1d39 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 3a231c34c5bc3d3cfc850b877758ec9fdaa8a483 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < ecc36a82ecfcfdf3c6606d209f22ec5543c410e0 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 0c63333ff97bd1275294fd12840a0efe9d7a4c59 (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < 935ee27d0904aa944cbcc979094c20e5ef62eead (git) Affected: 29c8d9eba550c6d73d17cc1618a9f5f2a7345aa1 , < e38e86995df27f1f854063dab1f0c6a513db3faf (git)
Linux	Linux	Affected: 4.10 Unaffected: 0 , < 4.10 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.140 , ≤ 6.6.* (semver) Unaffected: 6.12.88 , ≤ 6.12.* (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)
Red Hat	Red Hat Enterprise Linux AppStream (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux AppStream (v. 9)	cpe:/a:redhat:enterprise_linux:9::appstream
Red Hat	Red Hat Enterprise Linux BaseOS (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux BaseOS (v. 8)	cpe:/o:redhat:enterprise_linux:8::baseos
Red Hat	Red Hat Enterprise Linux BaseOS (v. 9)	cpe:/o:redhat:enterprise_linux:9::baseos
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux CRB (v. 8)	cpe:/a:redhat:enterprise_linux:8::crb
Red Hat	Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)	cpe:/a:redhat:enterprise_linux:9::crb
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time for NFV (v. 9)	cpe:/a:redhat:enterprise_linux:9::nfv
Red Hat	Red Hat Enterprise Linux Real Time (v. 10)	cpe:/o:redhat:enterprise_linux:10.2
Red Hat	Red Hat Enterprise Linux Real Time (v. 9)	cpe:/a:redhat:enterprise_linux:9::realtime
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat Enterprise Linux 8	cpe:/o:redhat:enterprise_linux:8
Red Hat	Red Hat Enterprise Linux 9	cpe:/o:redhat:enterprise_linux:9
Red Hat	Red Hat Enterprise Linux 6	cpe:/o:redhat:enterprise_linux:6

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        },
        {
          "url": "https://git.kernel.org/stable/c/3a231c34c5bc3d3cfc850b877758ec9fdaa8a483"
        },
        {
          "url": "https://git.kernel.org/stable/c/ecc36a82ecfcfdf3c6606d209f22ec5543c410e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/45d25e3ec17900bf5a9d6876ff16ceee31c4c0e0"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c63333ff97bd1275294fd12840a0efe9d7a4c59"
        },
        {
          "url": "https://git.kernel.org/stable/c/935ee27d0904aa944cbcc979094c20e5ef62eead"
        },
        {
          "url": "https://git.kernel.org/stable/c/e38e86995df27f1f854063dab1f0c6a513db3faf"
        }
      ],
      "title": "RDMA/vmw_pvrdma: Fix double free on pvrdma_alloc_ucontext() error path",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46189",
    "datePublished": "2026-05-28T09:36:43.205Z",
    "dateReserved": "2026-05-13T15:03:33.104Z",
    "dateUpdated": "2026-07-01T12:04:55.460Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

Action not permitted

alsa-2026:33743

Vulnerability from osv_almalinux

CVE-2026-23216 (GCVE-0-2026-23216)

CVE-2026-45984 (GCVE-0-2026-45984)

CVE-2026-46189 (GCVE-0-2026-46189)

Tags

Sightings

Nomenclature