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CERTFR-2025-AVI-0979
Vulnerability from certfr_avis - Published: 2025-11-07 - Updated: 2025-11-07
De multiples vulnérabilités ont été découvertes dans le noyau Linux de SUSE. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
NoneImpacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| SUSE | N/A | SUSE Linux Enterprise High Performance Computing 15 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise High Performance Computing 12 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 12 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Live Patching 15-SP6 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 15 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Server for SAP Applications 15 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Real Time 15 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Live Patching 12-SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Live Patching 15-SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Real Time 15 SP6 | ||
| SUSE | N/A | openSUSE Leap 15.6 | ||
| SUSE | N/A | SUSE Linux Enterprise Server for SAP Applications 12 SP5 | ||
| SUSE | N/A | SUSE Linux Enterprise Server for SAP Applications 15 SP6 | ||
| SUSE | N/A | SUSE Linux Enterprise Server 15 SP6 | ||
| SUSE | N/A | SUSE Linux Enterprise Micro 5.5 |
References
| Title | Publication Time | Tags | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "SUSE Linux Enterprise High Performance Computing 15 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise High Performance Computing 12 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 12 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Live Patching 15-SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 15 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server for SAP Applications 15 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Real Time 15 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Live Patching 12-SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Live Patching 15-SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Real Time 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "openSUSE Leap 15.6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server for SAP Applications 12 SP5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server for SAP Applications 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Server 15 SP6",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
},
{
"description": "SUSE Linux Enterprise Micro 5.5",
"product": {
"name": "N/A",
"vendor": {
"name": "SUSE",
"scada": false
}
}
}
],
"affected_systems_content": null,
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2022-49138",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-49138"
},
{
"name": "CVE-2023-52927",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52927"
},
{
"name": "CVE-2023-52923",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-52923"
},
{
"name": "CVE-2024-53057",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-53057"
},
{
"name": "CVE-2024-26643",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-26643"
},
{
"name": "CVE-2022-49770",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-49770"
},
{
"name": "CVE-2025-38212",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38212"
},
{
"name": "CVE-2025-38079",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38079"
},
{
"name": "CVE-2024-53164",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-53164"
},
{
"name": "CVE-2025-38664",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38664"
},
{
"name": "CVE-2025-37797",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-37797"
},
{
"name": "CVE-2025-38257",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38257"
},
{
"name": "CVE-2025-38206",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38206"
},
{
"name": "CVE-2025-38289",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38289"
},
{
"name": "CVE-2025-38617",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38617"
},
{
"name": "CVE-2025-38618",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38618"
},
{
"name": "CVE-2022-50252",
"url": "https://www.cve.org/CVERecord?id=CVE-2022-50252"
},
{
"name": "CVE-2025-38200",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38200"
},
{
"name": "CVE-2024-57947",
"url": "https://www.cve.org/CVERecord?id=CVE-2024-57947"
},
{
"name": "CVE-2025-38213",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38213"
},
{
"name": "CVE-2025-38181",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38181"
}
],
"initial_release_date": "2025-11-07T00:00:00",
"last_revision_date": "2025-11-07T00:00:00",
"links": [],
"reference": "CERTFR-2025-AVI-0979",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2025-11-07T00:00:00.000000"
}
],
"risks": [
{
"description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
}
],
"summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de SUSE. Elles permettent \u00e0 un attaquant de provoquer un probl\u00e8me de s\u00e9curit\u00e9 non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur.",
"title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de SUSE",
"vendor_advisories": [
{
"published_at": "2025-11-06",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3970-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253970-1"
},
{
"published_at": "2025-11-04",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3932-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253932-1"
},
{
"published_at": "2025-10-31",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3892-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253892-1"
},
{
"published_at": "2025-11-04",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3936-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253936-1"
},
{
"published_at": "2025-11-03",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3926-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253926-1"
},
{
"published_at": "2025-11-06",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3983-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253983-1"
},
{
"published_at": "2025-11-04",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3927-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253927-1"
},
{
"published_at": "2025-11-04",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:3935-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20253935-1"
},
{
"published_at": "2025-11-04",
"title": "Bulletin de s\u00e9curit\u00e9 SUSE SUSE-SU-2025:2588-1",
"url": "https://www.suse.com/support/update/announcement/2025/suse-su-20252588-1"
}
]
}
CVE-2022-49138 (GCVE-0-2022-49138)
Vulnerability from cvelistv5 – Published: 2025-02-26 01:55 – Updated: 2026-08-05 08:54
VLAI
EPSS
VEX
Title
Bluetooth: hci_event: Ignore multiple conn complete events
Summary
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: hci_event: Ignore multiple conn complete events
When one of the three connection complete events is received multiple
times for the same handle, the device is registered multiple times which
leads to memory corruptions. Therefore, consequent events for a single
connection are ignored.
The conn->state can hold different values, therefore HCI_CONN_HANDLE_UNSET
is introduced to identify new connections. To make sure the events do not
contain this or another invalid handle HCI_CONN_HANDLE_MAX and checks
are introduced.
Buglink: https://bugzilla.kernel.org/show_bug.cgi?id=215497
Severity
8.8 (High)
Assigner
References
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
7d0db0a373195385a2e0b19d1f5e4b186fdcffac , < aa1ca580e3ffe62a2c5ea1c095b609b2943c5269
(git)
Affected: 7d0db0a373195385a2e0b19d1f5e4b186fdcffac , < d5ebaa7c5f6f688959e8d40840b2249ede63b8ed (git) |
|
| Linux | Linux |
Affected:
2.6.27
Unaffected: 0 , < 2.6.27 (semver) Unaffected: 5.17.3 , ≤ 5.17.* (semver) Unaffected: 5.18 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"include/net/bluetooth/hci_core.h",
"net/bluetooth/hci_conn.c",
"net/bluetooth/hci_event.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "aa1ca580e3ffe62a2c5ea1c095b609b2943c5269",
"status": "affected",
"version": "7d0db0a373195385a2e0b19d1f5e4b186fdcffac",
"versionType": "git"
},
{
"lessThan": "d5ebaa7c5f6f688959e8d40840b2249ede63b8ed",
"status": "affected",
"version": "7d0db0a373195385a2e0b19d1f5e4b186fdcffac",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"include/net/bluetooth/hci_core.h",
"net/bluetooth/hci_conn.c",
"net/bluetooth/hci_event.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.27"
},
{
"lessThan": "2.6.27",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "5.17.*",
"status": "unaffected",
"version": "5.17.3",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "5.18",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.17.3",
"versionStartIncluding": "2.6.27",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.18",
"versionStartIncluding": "2.6.27",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: Ignore multiple conn complete events\n\nWhen one of the three connection complete events is received multiple\ntimes for the same handle, the device is registered multiple times which\nleads to memory corruptions. Therefore, consequent events for a single\nconnection are ignored.\n\nThe conn-\u003estate can hold different values, therefore HCI_CONN_HANDLE_UNSET\nis introduced to identify new connections. To make sure the events do not\ncontain this or another invalid handle HCI_CONN_HANDLE_MAX and checks\nare introduced.\n\nBuglink: https://bugzilla.kernel.org/show_bug.cgi?id=215497"
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 8.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:A - The bug is in Bluetooth HCI event processing (Connection Complete / Sync / LE Complete) reached via the controller\u2019s HCI path; per kernel guidance Bluetooth is Adjacent, matching phones and other BT-enabled devices in range.\nAC:L - An attacker who can deliver duplicate connection-complete HCI events (malicious/buggy controller or equivalent HCI injection) triggers the double device_add path reliably; no race or other condition outside attacker control is required.\nPR:N - HCI connection-complete handling runs in the kernel during link setup before pairing/authentication and needs no local account or capability on the victim\u2014only an unauthenticated adjacent Bluetooth/HCI source.\nUI:N - If the host is connectable/advertising (common on phones and IoT), connection establishment and subsequent HCI events are processed without requiring the user to mount, open, or otherwise interact with anything.\nS:U - Impact stays in the host kernel\u2019s Bluetooth/driver-core authority; this is not a VM escape, IOMMU bypass, or other cross-boundary breakout.\nC:H - Duplicate processing calls device_add again; on -EEXIST the error path kfree\u2019s still-registered device_private while it remains on the parent klist, yielding UAF/heap corruption the author also described as use-after-free\u2014sufficient for arbitrary read.\nI:H - The same UAF of device_private while the device stays registered is kernel memory corruption (commit: \u201cmemory corruptions\u201d), enabling heap reuse and control-flow hijacking / arbitrary write, not merely a clean crash.\nA:H - The corrupted sysfs device state leads to a NULL deref in klist_next/device_find_child on disconnect (BUG 215497), i.e. a kernel oops/DoS; UAFs also crash when not fully exploited."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T08:54:02.681Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/aa1ca580e3ffe62a2c5ea1c095b609b2943c5269"
},
{
"url": "https://git.kernel.org/stable/c/d5ebaa7c5f6f688959e8d40840b2249ede63b8ed"
}
],
"title": "Bluetooth: hci_event: Ignore multiple conn complete events",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2022-49138",
"datePublished": "2025-02-26T01:55:10.632Z",
"dateReserved": "2025-02-26T01:49:39.268Z",
"dateUpdated": "2026-08-05T08:54:02.681Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
CVE-2022-49770 (GCVE-0-2022-49770)
Vulnerability from cvelistv5 – Published: 2025-05-01 14:09 – Updated: 2026-08-05 08:56
VLAI
EPSS
VEX
Title
ceph: avoid putting the realm twice when decoding snaps fails
Summary
In the Linux kernel, the following vulnerability has been resolved:
ceph: avoid putting the realm twice when decoding snaps fails
When decoding the snaps fails it maybe leaving the 'first_realm'
and 'realm' pointing to the same snaprealm memory. And then it'll
put it twice and could cause random use-after-free, BUG_ON, etc
issues.
Severity
9.8 (Critical)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
9030aaf9bf0a1eee47a154c316c789e959638b0f , < 274e4c79a3a2a24fba7cfe0e41113f1138785c37
(git)
Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < cb7495fe957526555782ce0723f79ce92a6db22e (git) Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < 044bc6d3c2c0e9090b0841e7b723875756534b45 (git) Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < 2f6e2de3a5289004650118b61f138fe7c28e1905 (git) Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < fd879c83e87735ab8f00ef7755752cf0cbae24b2 (git) Affected: 9030aaf9bf0a1eee47a154c316c789e959638b0f , < 51884d153f7ec85e18d607b2467820a90e0f4359 (git) |
|
| Linux | Linux |
Affected:
2.6.34
Unaffected: 0 , < 2.6.34 (semver) Unaffected: 4.19.268 , ≤ 4.19.* (semver) Unaffected: 5.4.226 , ≤ 5.4.* (semver) Unaffected: 5.10.157 , ≤ 5.10.* (semver) Unaffected: 5.15.81 , ≤ 5.15.* (semver) Unaffected: 6.0.10 , ≤ 6.0.* (semver) Unaffected: 6.1 , ≤ * (original_commit_for_fix) |
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/ceph/snap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"lessThan": "274e4c79a3a2a24fba7cfe0e41113f1138785c37",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
},
{
"lessThan": "cb7495fe957526555782ce0723f79ce92a6db22e",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
},
{
"lessThan": "044bc6d3c2c0e9090b0841e7b723875756534b45",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
},
{
"lessThan": "2f6e2de3a5289004650118b61f138fe7c28e1905",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
},
{
"lessThan": "fd879c83e87735ab8f00ef7755752cf0cbae24b2",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
},
{
"lessThan": "51884d153f7ec85e18d607b2467820a90e0f4359",
"status": "affected",
"version": "9030aaf9bf0a1eee47a154c316c789e959638b0f",
"versionType": "git"
}
]
},
{
"defaultStatus": "affected",
"product": "Linux",
"programFiles": [
"fs/ceph/snap.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
{
"status": "affected",
"version": "2.6.34"
},
{
"lessThan": "2.6.34",
"status": "unaffected",
"version": "0",
"versionType": "semver"
},
{
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"version": "4.19.268",
"versionType": "semver"
},
{
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CVE-2022-50252 (GCVE-0-2022-50252)
Vulnerability from cvelistv5 – Published: 2025-09-15 14:02 – Updated: 2026-08-05 08:57
VLAI
EPSS
VEX
Title
igb: Do not free q_vector unless new one was allocated
Summary
In the Linux kernel, the following vulnerability has been resolved:
igb: Do not free q_vector unless new one was allocated
Avoid potential use-after-free condition under memory pressure. If the
kzalloc() fails, q_vector will be freed but left in the original
adapter->q_vector[v_idx] array position.
Severity
7.8 (High)
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 64ca1969599857143e91aeec4440640656100803
(git)
Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 0200f0fbb11e359cc35af72ab10b2ec224e6f633 (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 68e8adbcaf7a8743e473343b38b9dad66e2ac6f3 (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < f96bd8adc8adde25390965a8c1ee81b73cb62075 (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 3cb18dea11196fb4a06f78294cec5e61985e1aff (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 314f7092b27749bdde44c14095b5533afa2a3bc8 (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 6e399577bd397a517df4b938601108c63769ce0a (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 56483aecf6b22eb7dff6315b3a174688c6ad494c (git) Affected: 72ddef0506da852dc82f078f37ced8ef4d74a2bf , < 0668716506ca66f90d395f36ccdaebc3e0e84801 (git) Affected: 5be042b1917ddf444c20f4e12856535307b37c01 (git) Affected: a0e26ed623a1e1460c1a191fbc0f37bddab7851a (git) Affected: f4b7f93cd34a6153d454a837708fd4203990d1ae (git) Affected: 3.18.23 , < 3.19 (semver) Affected: 4.1.9 , < 4.2 (semver) Affected: 4.2.2 , < 4.3 (semver) |
|
| Linux | Linux |
Affected:
4.3
Unaffected: 0 , < 4.3 (semver) Unaffected: 4.9.337 , ≤ 4.9.* (semver) Unaffected: 4.14.303 , ≤ 4.14.* (semver) Unaffected: 4.19.270 , ≤ 4.19.* (semver) Unaffected: 5.4.229 , ≤ 5.4.* (semver) Unaffected: 5.10.163 , ≤ 5.10.* (semver) Unaffected: 5.15.86 , ≤ 5.15.* (semver) Unaffected: 6.0.16 , ≤ 6.0.* (semver) Unaffected: 6.1.2 , ≤ 6.1.* (semver) Unaffected: 6.2 , ≤ * (original_commit_for_fix) |
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CVE-2023-52923 (GCVE-0-2023-52923)
Vulnerability from cvelistv5 – Published: 2025-01-20 10:48 – Updated: 2026-08-05 09:12
VLAI
EPSS
VEX
Title
netfilter: nf_tables: adapt set backend to use GC transaction API
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: adapt set backend to use GC transaction API
Use the GC transaction API to replace the old and buggy gc API and the
busy mark approach.
No set elements are removed from async garbage collection anymore,
instead the _DEAD bit is set on so the set element is not visible from
lookup path anymore. Async GC enqueues transaction work that might be
aborted and retried later.
rbtree and pipapo set backends does not set on the _DEAD bit from the
sync GC path since this runs in control plane path where mutex is held.
In this case, set elements are deactivated, removed and then released
via RCU callback, sync GC never fails.
Severity
7.8 (High)
Assigner
References
7 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < cb4d00b563675ba8ff6ef94b077f58d816f68ba3
(git)
Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < c357648929c8dff891502349769aafb8f0452bc2 (git) Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < 146c76866795553dbc19998f36718d7986ad302b (git) Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < 479a2cf5259347d6a1f658b0f791d27a34908e91 (git) Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < df650d6a4bf47248261b61ef6b174d7c54034d15 (git) Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < e4d71d6a9c7db93f7bf20c3a0f0659d63d7de681 (git) Affected: 9d0982927e79049675cb6c6c04a0ebb3dad5a434 , < f6c383b8c31a93752a52697f8430a71dcbc46adf (git) |
|
| Linux | Linux |
Affected:
4.1
Unaffected: 0 , < 4.1 (semver) Unaffected: 4.19.316 , ≤ 4.19.* (semver) Unaffected: 5.4.262 , ≤ 5.4.* (semver) Unaffected: 5.10.198 , ≤ 5.10.* (semver) Unaffected: 5.15.134 , ≤ 5.15.* (semver) Unaffected: 6.1.56 , ≤ 6.1.* (semver) Unaffected: 6.4.11 , ≤ 6.4.* (semver) Unaffected: 6.5 , ≤ * (original_commit_for_fix) |
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CVE-2023-52927 (GCVE-0-2023-52927)
Vulnerability from cvelistv5 – Published: 2025-03-14 14:25 – Updated: 2026-08-05 09:12
VLAI
EPSS
VEX
Title
netfilter: allow exp not to be removed in nf_ct_find_expectation
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: allow exp not to be removed in nf_ct_find_expectation
Currently nf_conntrack_in() calling nf_ct_find_expectation() will
remove the exp from the hash table. However, in some scenario, we
expect the exp not to be removed when the created ct will not be
confirmed, like in OVS and TC conntrack in the following patches.
This patch allows exp not to be removed by setting IPS_CONFIRMED
in the status of the tmpl.
Severity
7.8 (High)
Assigner
References
6 references
Impacted products
8 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e , < 3fa58a6fbd1e9e5682d09cdafb08fba004cb12ec
(git)
Affected: 1bc91a5ddf3eaea0e0ea957cccf3abdcfcace00e , < 4914109a8e1e494c6aa9852f9e84ec77a5fc643f (git) |
|
| Linux | Linux |
Affected:
5.18
Unaffected: 0 , < 5.18 (semver) Unaffected: 6.1.130 , ≤ 6.1.* (semver) Unaffected: 6.6 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.6 , < *
(custom)
|
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CVE-2024-26643 (GCVE-0-2024-26643)
Vulnerability from cvelistv5 – Published: 2024-03-21 10:43 – Updated: 2026-08-05 11:26
VLAI
EPSS
VEX
Title
netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_tables: mark set as dead when unbinding anonymous set with timeout
While the rhashtable set gc runs asynchronously, a race allows it to
collect elements from anonymous sets with timeouts while it is being
released from the commit path.
Mingi Cho originally reported this issue in a different path in 6.1.x
with a pipapo set with low timeouts which is not possible upstream since
7395dfacfff6 ("netfilter: nf_tables: use timestamp to check for set
element timeout").
Fix this by setting on the dead flag for anonymous sets to skip async gc
in this case.
According to 08e4c8c5919f ("netfilter: nf_tables: mark newset as dead on
transaction abort"), Florian plans to accelerate abort path by releasing
objects via workqueue, therefore, this sets on the dead flag for abort
path too.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
Assigner
References
10 references
Impacted products
3 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
8da1b048f9a501d3d7d38c188ba09d7d0d5b8c27 , < d75a589bb92af1abf3b779cfcd1977ca11b27033
(git)
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|
| Linux | Linux |
Affected:
6.5
Unaffected: 0 , < 6.5 (semver) Unaffected: 5.4.274 , ≤ 5.4.* (semver) Unaffected: 5.10.215 , ≤ 5.10.* (semver) Unaffected: 5.15.154 , ≤ 5.15.* (semver) Unaffected: 6.1.84 , ≤ 6.1.* (semver) Unaffected: 6.6.24 , ≤ 6.6.* (semver) Unaffected: 6.7.12 , ≤ 6.7.* (semver) Unaffected: 6.8 , ≤ * (original_commit_for_fix) |
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
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CVE-2024-53057 (GCVE-0-2024-53057)
Vulnerability from cvelistv5 – Published: 2024-11-19 17:19 – Updated: 2026-08-05 11:43
VLAI
EPSS
VEX
Title
net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT
Summary
In the Linux kernel, the following vulnerability has been resolved:
net/sched: stop qdisc_tree_reduce_backlog on TC_H_ROOT
In qdisc_tree_reduce_backlog, Qdiscs with major handle ffff: are assumed
to be either root or ingress. This assumption is bogus since it's valid
to create egress qdiscs with major handle ffff:
Budimir Markovic found that for qdiscs like DRR that maintain an active
class list, it will cause a UAF with a dangling class pointer.
In 066a3b5b2346, the concern was to avoid iterating over the ingress
qdisc since its parent is itself. The proper fix is to stop when parent
TC_H_ROOT is reached because the only way to retrieve ingress is when a
hierarchy which does not contain a ffff: major handle call into
qdisc_lookup with TC_H_MAJ(TC_H_ROOT).
In the scenario where major ffff: is an egress qdisc in any of the tree
levels, the updates will also propagate to TC_H_ROOT, which then the
iteration must stop.
net/sched/sch_api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-416 - Use After Free
Assigner
References
13 references
Impacted products
9 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
066a3b5b2346febf9a655b444567b7138e3bb939 , < e7f9a6f97eb067599a74f3bcb6761976b0ed303e
(git)
Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < dbe778b08b5101df9e89bc06e0a3a7ecd2f4ef20 (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < ce691c814bc7a3c30c220ffb5b7422715458fd9b (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < 05df1b1dff8f197f1c275b57ccb2ca33021df552 (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < 580b3189c1972aff0f993837567d36392e9d981b (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < 597cf9748c3477bf61bc35f0634129f56764ad24 (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < 9995909615c3431a5304c1210face5f268d24dba (git) Affected: 066a3b5b2346febf9a655b444567b7138e3bb939 , < 2e95c4384438adeaa772caa560244b1a2efef816 (git) |
|
| Linux | Linux |
Affected:
2.6.25
Unaffected: 0 , < 2.6.25 (semver) Unaffected: 4.19.323 , ≤ 4.19.* (semver) Unaffected: 5.4.285 , ≤ 5.4.* (semver) Unaffected: 5.10.229 , ≤ 5.10.* (semver) Unaffected: 5.15.171 , ≤ 5.15.* (semver) Unaffected: 6.1.116 , ≤ 6.1.* (semver) Unaffected: 6.6.60 , ≤ 6.6.* (semver) Unaffected: 6.11.7 , ≤ 6.11.* (semver) Unaffected: 6.12 , ≤ * (original_commit_for_fix) |
|
| Siemens | RUGGEDCOM RST2428P |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SCALANCE XCM-/XRM-/XCH-/XRH-300 family |
Affected:
0 , < V3.2
(custom)
|
|
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem |
Affected:
0 , < *
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
|
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.0 , < V3.1.5
(custom)
|
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CVE-2024-53164 (GCVE-0-2024-53164)
Vulnerability from cvelistv5 – Published: 2024-12-27 13:38 – Updated: 2026-08-05 11:44
VLAI
EPSS
VEX
Title
net: sched: fix ordering of qlen adjustment
Summary
In the Linux kernel, the following vulnerability has been resolved:
net: sched: fix ordering of qlen adjustment
Changes to sch->q.qlen around qdisc_tree_reduce_backlog() need to happen
_before_ a call to said function because otherwise it may fail to notify
parent qdiscs when the child is about to become empty.
Severity
7.8 (High)
Assigner
References
9 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 44782565e1e6174c94bddfa72ac7267cd09c1648
(git)
Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 5e473f462a16f1a34e49ea4289a667d2e4f35b52 (git) Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 33db36b3c53d0fda2699ea39ba72bee4de8336e8 (git) Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 489422e2befff88a1de52b2acebe7b333bded025 (git) Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 97e13434b5da8e91bdf965352fad2141d13d72d3 (git) Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < e3e54ad9eff8bdaa70f897e5342e34b76109497f (git) Affected: 959466588aa7f84ccf79ae36a1d89542eaf9aaec , < 5eb7de8cd58e73851cd37ff8d0666517d9926948 (git) |
|
| Linux | Linux |
Affected:
4.14
Unaffected: 0 , < 4.14 (semver) Unaffected: 5.4.289 , ≤ 5.4.* (semver) Unaffected: 5.10.233 , ≤ 5.10.* (semver) Unaffected: 5.15.176 , ≤ 5.15.* (semver) Unaffected: 6.1.122 , ≤ 6.1.* (semver) Unaffected: 6.6.68 , ≤ 6.6.* (semver) Unaffected: 6.12.7 , ≤ 6.12.* (semver) Unaffected: 6.13 , ≤ * (original_commit_for_fix) |
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"value": "AV:L - The vulnerable qdisc hierarchy (cake/choke leaf under a classful parent such as DRR/QFQ/HFSC) is built through rtnetlink RTM_NEWQDISC/RTM_NEWTCLASS and triggered by locally injected traffic on a local device, matching the tc/netlink qdisc local vector.\nAC:L - The attacker fully controls every precondition \u2014 the qdisc topology, the cake memlimit / choke limit that forces the drop, and the packet injection \u2014 making the miscounted qlen and the resulting stale active class deterministic with no race to win.\nPR:L - tc configuration requires only CAP_NET_ADMIN over the target netns, checked via namespace-relative netlink_net_capable(); an unprivileged user obtains it with `unshare -Urn` and uses the always-present `lo` device.\nUI:N - The attacker performs all steps \u2014 creating the qdisc tree, sending packets, and deleting the class \u2014 with no action by any other user.\nS:U - The corruption and its consequences remain within the kernel\u0027s own security authority; this is standard local kernel privilege escalation with no crossing into a hypervisor or IOMMU boundary.\nC:H - The missed qlen_notify() leaves a freed class linked in the parent\u0027s active list/rbtree, and the resulting use-after-free lets the attacker reclaim the slab object and read back attacker-shaped kernel memory, yielding arbitrary kernel read.\nI:H - The same use-after-free provides both a hijackable indirect call through cl-\u003eqdisc-\u003eops-\u003epeek and unlink-style writes via list_del(\u0026cl-\u003ealist)/rb_erase(\u0026cl-\u003eel_node), giving control-flow hijack and arbitrary write.\nA:H - The stale class causes an immediate use-after-free oops, and even absent full exploitation the permanently non-dequeuing qdisc wedges all transmission on the device, a complete availability loss."
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CVE-2024-57947 (GCVE-0-2024-57947)
Vulnerability from cvelistv5 – Published: 2025-01-23 13:54 – Updated: 2026-08-05 11:47
VLAI
EPSS
VEX
Title
netfilter: nf_set_pipapo: fix initial map fill
Summary
In the Linux kernel, the following vulnerability has been resolved:
netfilter: nf_set_pipapo: fix initial map fill
The initial buffer has to be inited to all-ones, but it must restrict
it to the size of the first field, not the total field size.
After each round in the map search step, the result and the fill map
are swapped, so if we have a set where f->bsize of the first element
is smaller than m->bsize_max, those one-bits are leaked into future
rounds result map.
This makes pipapo find an incorrect matching results for sets where
first field size is not the largest.
Followup patch adds a test case to nft_concat_range.sh selftest script.
Thanks to Stefano Brivio for pointing out that we need to zero out
the remainder explicitly, only correcting memset() argument isn't enough.
Severity
9.8 (Critical)
Assigner
References
6 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
3c4287f62044a90e73a561aa05fc46e62da173da , < 77bf0c4ab928ca4c9a99311f4f70ba0c17fecba9
(git)
Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 957a4d1c4c5849e4515c9fb4db21bf85318103dc (git) Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 9625c46ce6fd4f922595a4b32b1de5066d70464f (git) Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 69b6a67f7052905e928d75a0c5871de50e686986 (git) Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 8058c88ac0df21239daee54b5934d5c80ca9685f (git) Affected: 3c4287f62044a90e73a561aa05fc46e62da173da , < 791a615b7ad2258c560f91852be54b0480837c93 (git) |
|
| Linux | Linux |
Affected:
5.6
Unaffected: 0 , < 5.6 (semver) Unaffected: 5.10.247 , ≤ 5.10.* (semver) Unaffected: 5.15.165 , ≤ 5.15.* (semver) Unaffected: 6.1.103 , ≤ 6.1.* (semver) Unaffected: 6.6.44 , ≤ 6.6.* (semver) Unaffected: 6.10.3 , ≤ 6.10.* (semver) Unaffected: 6.11 , ≤ * (original_commit_for_fix) |
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CVE-2025-37797 (GCVE-0-2025-37797)
Vulnerability from cvelistv5 – Published: 2025-05-02 14:16 – Updated: 2026-08-05 11:57
VLAI
EPSS
VEX
Title
net_sched: hfsc: Fix a UAF vulnerability in class handling
Summary
In the Linux kernel, the following vulnerability has been resolved:
net_sched: hfsc: Fix a UAF vulnerability in class handling
This patch fixes a Use-After-Free vulnerability in the HFSC qdisc class
handling. The issue occurs due to a time-of-check/time-of-use condition
in hfsc_change_class() when working with certain child qdiscs like netem
or codel.
The vulnerability works as follows:
1. hfsc_change_class() checks if a class has packets (q.qlen != 0)
2. It then calls qdisc_peek_len(), which for certain qdiscs (e.g.,
codel, netem) might drop packets and empty the queue
3. The code continues assuming the queue is still non-empty, adding
the class to vttree
4. This breaks HFSC scheduler assumptions that only non-empty classes
are in vttree
5. Later, when the class is destroyed, this can lead to a Use-After-Free
The fix adds a second queue length check after qdisc_peek_len() to verify
the queue wasn't emptied.
Severity
7.8 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
Assigner
References
10 references
Impacted products
2 products
| Vendor | Product | Version | |
|---|---|---|---|
| Linux | Linux |
Affected:
21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 28b09a067831f7317c3841812276022d6c940677
(git)
Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 39b9095dd3b55d9b2743df038c32138efa34a9de (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < fcc8ede663569c704fb00a702973bd6c00373283 (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 20d584a33e480ae80d105f43e0e7b56784da41b9 (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 3aa852e3605000d5c47035c3fc3a986d14ccfa9f (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 86cd4641c713455a4f1c8e54c370c598c2b1cee0 (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < bb583c88d23b72d8d16453d24856c99bd93dadf5 (git) Affected: 21f4d5cc25ec0e6e8eb8420dd2c399e6d2fc7d14 , < 3df275ef0a6ae181e8428a6589ef5d5231e58b5c (git) |
|
| Linux | Linux |
Affected:
4.14
Unaffected: 0 , < 4.14 (semver) Unaffected: 5.4.293 , ≤ 5.4.* (semver) Unaffected: 5.10.237 , ≤ 5.10.* (semver) Unaffected: 5.15.181 , ≤ 5.15.* (semver) Unaffected: 6.1.136 , ≤ 6.1.* (semver) Unaffected: 6.6.89 , ≤ 6.6.* (semver) Unaffected: 6.12.26 , ≤ 6.12.* (semver) Unaffected: 6.14.5 , ≤ 6.14.* (semver) Unaffected: 6.15 , ≤ * (original_commit_for_fix) |
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"status": "unaffected",
"version": "6.14.5",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "6.15",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.4.293",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.10.237",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "5.15.181",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.1.136",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.6.89",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.12.26",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.14.5",
"versionStartIncluding": "4.14",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
"versionEndExcluding": "6.15",
"versionStartIncluding": "4.14",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet_sched: hfsc: Fix a UAF vulnerability in class handling\n\nThis patch fixes a Use-After-Free vulnerability in the HFSC qdisc class\nhandling. The issue occurs due to a time-of-check/time-of-use condition\nin hfsc_change_class() when working with certain child qdiscs like netem\nor codel.\n\nThe vulnerability works as follows:\n1. hfsc_change_class() checks if a class has packets (q.qlen != 0)\n2. It then calls qdisc_peek_len(), which for certain qdiscs (e.g.,\n codel, netem) might drop packets and empty the queue\n3. The code continues assuming the queue is still non-empty, adding\n the class to vttree\n4. This breaks HFSC scheduler assumptions that only non-empty classes\n are in vttree\n5. Later, when the class is destroyed, this can lead to a Use-After-Free\n\nThe fix adds a second queue length check after qdisc_peek_len() to verify\nthe queue wasn\u0027t emptied."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 7.8,
"baseSeverity": "HIGH",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"scenarios": [
{
"lang": "en",
"value": "AV:L - The entire attack sequence (create hfsc qdisc, attach a codel/netem child, `tc class change`, then `tc class del`) is driven through rtnetlink RTM_NEWTCLASS/RTM_DELTCLASS messages, which require local system access. Per kernel CNA guidance, tc/netlink qdisc bugs are Local.\nAC:L - This is a deterministic time-of-check/time-of-use flaw inside a single netlink operation, not a thread race \u2014 the attacker picks the child qdisc (codel/netem) and its parameters so the peek is guaranteed to drop the packet and empty the queue. No condition outside the attacker\u0027s control is involved, and a reliable reproducer existed.\nPR:L - The tc class paths only check `netlink_ns_capable(skb, net-\u003euser_ns, CAP_NET_ADMIN)`, which an unprivileged user satisfies inside a new user+net namespace (`unshare -Urn`), where they can create a dummy/veth device, build the hfsc hierarchy and generate the traffic. Per guidance, tc/qdisc reachable via user namespaces is Low, not High.\nUI:N - The attacker performs every step \u2014 qdisc/class configuration, packet generation, class change and class deletion \u2014 with no action by any other user. Subsequent dequeue on the attacker\u0027s own device triggers the freed-object access.\nS:U - The corruption and its consequences are confined to the kernel\u0027s own memory and privilege domain; there is no crossing of a VM, IOMMU, or other security-authority boundary. Standard kernel-local privilege escalation is Unchanged.\nC:H - The freed `hfsc_class` remains linked in the parent\u0027s vt_tree/eltree, so `vttree_firstfit()`/`eltree_get_mindl()` read `cl_f`, `cl_vt`, `cl_parent` and `cl-\u003eqdisc` out of reclaimed slab memory, giving an attacker who sprays the slot a controlled read primitive and kernel memory disclosure.\nI:H - The dangling rb_node yields `rb_erase()`/`rb_insert_color()` pointer writes plus the direct `cl-\u003ecl_parent-\u003ecl_cvtmin = cl-\u003ecl_vt` write through freed memory, and `qdisc_dequeue_peeked()` makes an indirect call through `cl-\u003eqdisc-\u003eops-\u003edequeue` read from the freed object \u2014 a full write/control-flow-hijack primitive for privilege escalation.\nA:H - Even without successful exploitation, traversing and erasing rb-tree nodes inside a kfree()d `hfsc_class` reliably corrupts the scheduler tree and panics or oopses the kernel, and the attacker can repeat it at will."
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-08-05T11:57:36.042Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
{
"url": "https://git.kernel.org/stable/c/28b09a067831f7317c3841812276022d6c940677"
},
{
"url": "https://git.kernel.org/stable/c/39b9095dd3b55d9b2743df038c32138efa34a9de"
},
{
"url": "https://git.kernel.org/stable/c/fcc8ede663569c704fb00a702973bd6c00373283"
},
{
"url": "https://git.kernel.org/stable/c/20d584a33e480ae80d105f43e0e7b56784da41b9"
},
{
"url": "https://git.kernel.org/stable/c/3aa852e3605000d5c47035c3fc3a986d14ccfa9f"
},
{
"url": "https://git.kernel.org/stable/c/86cd4641c713455a4f1c8e54c370c598c2b1cee0"
},
{
"url": "https://git.kernel.org/stable/c/bb583c88d23b72d8d16453d24856c99bd93dadf5"
},
{
"url": "https://git.kernel.org/stable/c/3df275ef0a6ae181e8428a6589ef5d5231e58b5c"
}
],
"title": "net_sched: hfsc: Fix a UAF vulnerability in class handling",
"x_generator": {
"engine": "bippy-1.2.0"
}
}
},
"cveMetadata": {
"assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"assignerShortName": "Linux",
"cveId": "CVE-2025-37797",
"datePublished": "2025-05-02T14:16:01.905Z",
"dateReserved": "2025-04-16T04:51:23.941Z",
"dateUpdated": "2026-08-05T11:57:36.042Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Trend slope:
-
(linear fit over daily sighting counts)
Show additional events:
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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.
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