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xfs: save ailp before dropping the AIL lock in push callbacks

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: xfs: save ailp before dropping the AIL lock in push callbacks In xfs_inode_item_push() and xfs_qm_dquot_logitem_push(), the AIL lock is dropped to perform buffer IO. Once the cluster buffer no longer protects the log item from reclaim, the log item may be freed by background reclaim or the dquot shrinker. The subsequent spin_lock() call dereferences lip->li_ailp, which is a use-after-free. Fix this by saving the ailp pointer in a local variable while the AIL lock is held and the log item is guaranteed to be valid.

Announced Source revision 1
Original source ↗

CVE-2026-31454

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-31454

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "edd1637d4e3911ab6c760f553f2040fe72f61a13",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "19437e4f7bb909afde832b39372aa2f3ce3cfd88",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "6dbe17f19c290a72ce57d5abc70e1fad0c3e14e5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "75669e987137f49c99ca44406bf0200d1892dd16",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "d8fc60bbaf5aea1604bf9f4ed565da6a1ac7a87d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "50f5f056807b7bed74f4f307f2ca0ed92f3e556d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "4c7d50147316cf049462f327c4a3e9dc2b7f1dd0",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "90c60e16401248a4900f3f9387f563d0178dcf34",
        "lessThan": "394d70b86fae9fe865e7e6d9540b7696f73aa9b6",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "fs/xfs/xfs_dquot_item.c",
      "fs/xfs/xfs_inode_item.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "5.9"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "5.9",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.253",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.203",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.168",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.131",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.80",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.21",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.11",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "fs/xfs/xfs_dquot_item.c",
      "fs/xfs/xfs_inode_item.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-31454

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#39882 · Revision 1
Added to Heist Feed
Publisher date
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