FKIE_CVE-2026-80532

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: fix another iunlink infinite loop bug in online fsck xrep_iunlink_resolve_bucket is supposed to reconstruct as much of the incore prev and next unlinked list pointers based on what it finds on disk and in memory before we move on to relinking the truly lost inodes back into the unlinked list. However, it's still vulnerable to infinite loops that come in via the next_unlinked pointers. Fix this problem by remembering which inodes we've already seen and checking new agino pointers against that. If a bit is already set, either this is a loop or the inode has nonzero link count. We'll deal with the second case in a subsequent patch.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/23690064f235a88a00c04f2e49f36bfb54ae560d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/24aec8c88539a382355761a9b924046885b6be40
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b6baf0db357fb84f3f3cfd33383a00de71a5a1c3
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/agheader_repair.c",
            "fs/xfs/scrub/trace.h"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "24aec8c88539a382355761a9b924046885b6be40",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "b6baf0db357fb84f3f3cfd33383a00de71a5a1c3",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "23690064f235a88a00c04f2e49f36bfb54ae560d",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            },
            {
              "lessThan": "6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622",
              "status": "affected",
              "version": "ab97f4b1c030750f2475bf4da8a9554d02206640",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/scrub/agheader_repair.c",
            "fs/xfs/scrub/trace.h"
          ],
          "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: fix another iunlink infinite loop bug in online fsck\n\nxrep_iunlink_resolve_bucket is supposed to reconstruct as much of the\nincore prev and next unlinked list pointers based on what it finds on\ndisk and in memory before we move on to relinking the truly lost inodes\nback into the unlinked list.  However, it\u0027s still vulnerable to infinite\nloops that come in via the next_unlinked pointers.\n\nFix this problem by remembering which inodes we\u0027ve already seen and\nchecking new agino pointers against that.  If a bit is already set,\neither this is a loop or the inode has nonzero link count.  We\u0027ll deal\nwith the second case in a subsequent patch."
    }
  ],
  "id": "CVE-2026-80532",
  "lastModified": "2026-08-26T15:17:07.270",
  "metrics": {},
  "published": "2026-08-26T15:17:07.270",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/23690064f235a88a00c04f2e49f36bfb54ae560d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/24aec8c88539a382355761a9b924046885b6be40"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6d67c6b99f1fc07c64b97fcbc974c6f1ada7f622"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b6baf0db357fb84f3f3cfd33383a00de71a5a1c3"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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