CVE-2026-31453 (GCVE-0-2026-31453)
Vulnerability from cvelistv5 – Published: 2026-04-22 13:53 – Updated: 2026-04-22 13:53
VLAI?
Title
xfs: avoid dereferencing log items after push callbacks
Summary
In the Linux kernel, the following vulnerability has been resolved:
xfs: avoid dereferencing log items after push callbacks
After xfsaild_push_item() calls iop_push(), the log item may have been
freed if the AIL lock was dropped during the push. Background inode
reclaim or the dquot shrinker can free the log item while the AIL lock
is not held, and the tracepoints in the switch statement dereference
the log item after iop_push() returns.
Fix this by capturing the log item type, flags, and LSN before calling
xfsaild_push_item(), and introducing a new xfs_ail_push_class trace
event class that takes these pre-captured values and the ailp pointer
instead of the log item pointer.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Linux | Linux |
Affected:
90c60e16401248a4900f3f9387f563d0178dcf34 , < c8a2ab339b88d10fc34a3318c92f07d8a467019d
(git)
Affected: 90c60e16401248a4900f3f9387f563d0178dcf34 , < 7121b22b0bac89394cc4c6a54b5aebc15347bdf5 (git) Affected: 90c60e16401248a4900f3f9387f563d0178dcf34 , < c4d603e8e58a3bf35480135ccca2b4f7238abda5 (git) Affected: 90c60e16401248a4900f3f9387f563d0178dcf34 , < 95fb5d643cc70959baa54cd17f52f80ffc3295e7 (git) Affected: 90c60e16401248a4900f3f9387f563d0178dcf34 , < 451c6329d9afa45862c36fe6677eb7750db60617 (git) Affected: 90c60e16401248a4900f3f9387f563d0178dcf34 , < 79ef34ec0554ec04bdbafafbc9836423734e1bd6 (git) |
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{
"containers": {
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"affected": [
{
"defaultStatus": "unaffected",
"product": "Linux",
"programFiles": [
"fs/xfs/xfs_trace.h",
"fs/xfs/xfs_trans_ail.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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},
{
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"programFiles": [
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"fs/xfs/xfs_trans_ail.c"
],
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"versions": [
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"version": "5.9"
},
{
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"version": "0",
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},
{
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"version": "6.1.168",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"version": "6.6.131",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.12.*",
"status": "unaffected",
"version": "6.12.80",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.18.*",
"status": "unaffected",
"version": "6.18.21",
"versionType": "semver"
},
{
"lessThanOrEqual": "6.19.*",
"status": "unaffected",
"version": "6.19.11",
"versionType": "semver"
},
{
"lessThanOrEqual": "*",
"status": "unaffected",
"version": "7.0",
"versionType": "original_commit_for_fix"
}
]
}
],
"cpeApplicability": [
{
"nodes": [
{
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"versionStartIncluding": "5.9",
"vulnerable": true
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{
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{
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{
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}
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],
"descriptions": [
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: avoid dereferencing log items after push callbacks\n\nAfter xfsaild_push_item() calls iop_push(), the log item may have been\nfreed if the AIL lock was dropped during the push. Background inode\nreclaim or the dquot shrinker can free the log item while the AIL lock\nis not held, and the tracepoints in the switch statement dereference\nthe log item after iop_push() returns.\n\nFix this by capturing the log item type, flags, and LSN before calling\nxfsaild_push_item(), and introducing a new xfs_ail_push_class trace\nevent class that takes these pre-captured values and the ailp pointer\ninstead of the log item pointer."
}
],
"providerMetadata": {
"dateUpdated": "2026-04-22T13:53:47.577Z",
"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"shortName": "Linux"
},
"references": [
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"url": "https://git.kernel.org/stable/c/c8a2ab339b88d10fc34a3318c92f07d8a467019d"
},
{
"url": "https://git.kernel.org/stable/c/7121b22b0bac89394cc4c6a54b5aebc15347bdf5"
},
{
"url": "https://git.kernel.org/stable/c/c4d603e8e58a3bf35480135ccca2b4f7238abda5"
},
{
"url": "https://git.kernel.org/stable/c/95fb5d643cc70959baa54cd17f52f80ffc3295e7"
},
{
"url": "https://git.kernel.org/stable/c/451c6329d9afa45862c36fe6677eb7750db60617"
},
{
"url": "https://git.kernel.org/stable/c/79ef34ec0554ec04bdbafafbc9836423734e1bd6"
}
],
"title": "xfs: avoid dereferencing log items after push callbacks",
"x_generator": {
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}
}
},
"cveMetadata": {
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"assignerShortName": "Linux",
"cveId": "CVE-2026-31453",
"datePublished": "2026-04-22T13:53:47.577Z",
"dateReserved": "2026-03-09T15:48:24.091Z",
"dateUpdated": "2026-04-22T13:53:47.577Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-31453",
"date": "2026-04-23",
"epss": "0.00024",
"percentile": "0.06794"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-31453\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2026-04-22T14:16:39.653\",\"lastModified\":\"2026-04-23T16:17:41.280\",\"vulnStatus\":\"Awaiting Analysis\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nxfs: avoid dereferencing log items after push callbacks\\n\\nAfter xfsaild_push_item() calls iop_push(), the log item may have been\\nfreed if the AIL lock was dropped during the push. Background inode\\nreclaim or the dquot shrinker can free the log item while the AIL lock\\nis not held, and the tracepoints in the switch statement dereference\\nthe log item after iop_push() returns.\\n\\nFix this by capturing the log item type, flags, and LSN before calling\\nxfsaild_push_item(), and introducing a new xfs_ail_push_class trace\\nevent class that takes these pre-captured values and the ailp pointer\\ninstead of the log item pointer.\"}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/451c6329d9afa45862c36fe6677eb7750db60617\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/7121b22b0bac89394cc4c6a54b5aebc15347bdf5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/79ef34ec0554ec04bdbafafbc9836423734e1bd6\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/95fb5d643cc70959baa54cd17f52f80ffc3295e7\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c4d603e8e58a3bf35480135ccca2b4f7238abda5\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/c8a2ab339b88d10fc34a3318c92f07d8a467019d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}"
}
}
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Sightings
| Author | Source | Type | Date |
|---|
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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