FKIE_CVE-2026-80533

Vulnerability from fkie_nvd - Published: 2026-08-26 15:17 - Updated: 2026-08-26 15:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: xfs: don't walk off the end of a null sc->sa.agi_bp in AGI repair LOLLM noticed a longstanding bug where xrep_iunlink_walk_ondisk_bucket tries to walk ragi->sc->sa.agi_bp to rebuild the unlinked inode lists. Unfortunately, it's possible for agi_bp to be null if the buffer verifier fails, so we have to use ragi->agi_bp (which skips verifier checks) instead.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1e96a00e0d3a00be6e4f368b2f18e2d345f813ce
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/43b4ecbc948a2e441804c9d7b772deb6b2e44e3d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/a6cfd0e4bb1e5f4dd2a67fa99eab36bda47cf081
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c36d7f68f1c2e7e528ad11044a0bd6a3016a6a03
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/agheader_repair.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "43b4ecbc948a2e441804c9d7b772deb6b2e44e3d",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "c36d7f68f1c2e7e528ad11044a0bd6a3016a6a03",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "a6cfd0e4bb1e5f4dd2a67fa99eab36bda47cf081",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "1e96a00e0d3a00be6e4f368b2f18e2d345f813ce",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/agheader_repair.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.10"
            },
            {
              "lessThan": "6.10",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.105",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.46",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: don\u0027t walk off the end of a null sc-\u003esa.agi_bp in AGI repair\n\nLOLLM noticed a longstanding bug where xrep_iunlink_walk_ondisk_bucket\ntries to walk ragi-\u003esc-\u003esa.agi_bp to rebuild the unlinked inode lists.\nUnfortunately, it\u0027s possible for agi_bp to be null if the buffer\nverifier fails, so we have to use ragi-\u003eagi_bp (which skips verifier\nchecks) instead."
    }
  ],
  "id": "CVE-2026-80533",
  "lastModified": "2026-08-26T15:17:07.410",
  "metrics": {},
  "published": "2026-08-26T15:17:07.410",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1e96a00e0d3a00be6e4f368b2f18e2d345f813ce"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/43b4ecbc948a2e441804c9d7b772deb6b2e44e3d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/a6cfd0e4bb1e5f4dd2a67fa99eab36bda47cf081"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c36d7f68f1c2e7e528ad11044a0bd6a3016a6a03"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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