CVE-2026-80804 (GCVE-0-2026-80804)
Vulnerability from cvelistv5
Published
2026-09-04 15:13
Modified
2026-10-19 08:43
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: xfs: restore nofs context unconditionally in xfs_trans_roll When __xfs_trans_commit() fails in xfs_trans_roll(), the NOFS context is cleared but only restored in the success path. This leaves the error path without nofs protection, causing a circular lock dependency between xfs_nondir_ilock_class and fs_reclaim: CPU0 CPU1 ---- ---- lock(&xfs_nondir_ilock_class); lock(fs_reclaim); lock(&xfs_nondir_ilock_class); lock(fs_reclaim); Fix this by moving xfs_trans_set_context() before the error check so that nofs context is always restored on the new transaction.
References
Impacted products
Vendor Product Version
Linux Linux Version: a1ca658d649a4d8972e2e21ac2625b633217e327
Version: a1ca658d649a4d8972e2e21ac2625b633217e327
Version: a1ca658d649a4d8972e2e21ac2625b633217e327
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/xfs_trans.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "b09198cf90ccf296970b774beea1c1ddb260f94c",
              "status": "affected",
              "version": "a1ca658d649a4d8972e2e21ac2625b633217e327",
              "versionType": "git"
            },
            {
              "lessThan": "4d00a39c676274f4071b467e630565ac1e3ae0f2",
              "status": "affected",
              "version": "a1ca658d649a4d8972e2e21ac2625b633217e327",
              "versionType": "git"
            },
            {
              "lessThan": "0241ea5fb0fe86d2a673163b2f5815111aadc7f7",
              "status": "affected",
              "version": "a1ca658d649a4d8972e2e21ac2625b633217e327",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "fs/xfs/xfs_trans.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
            {
              "lessThan": "7.0",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.1.*",
              "status": "unaffected",
              "version": "7.1.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1.11",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.1",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nxfs: restore nofs context unconditionally in xfs_trans_roll\n\nWhen __xfs_trans_commit() fails in xfs_trans_roll(), the NOFS context\nis cleared but only restored in the success path.  This leaves the\nerror path without nofs protection, causing a circular lock dependency\nbetween xfs_nondir_ilock_class and fs_reclaim:\n\n       CPU0                    CPU1\n       ----                    ----\n  lock(\u0026xfs_nondir_ilock_class);\n                               lock(fs_reclaim);\n                               lock(\u0026xfs_nondir_ilock_class);\n  lock(fs_reclaim);\n\nFix this by moving xfs_trans_set_context() before the error check so\nthat nofs context is always restored on the new transaction."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T08:43:57.464Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b09198cf90ccf296970b774beea1c1ddb260f94c"
        },
        {
          "url": "https://git.kernel.org/stable/c/4d00a39c676274f4071b467e630565ac1e3ae0f2"
        },
        {
          "url": "https://git.kernel.org/stable/c/0241ea5fb0fe86d2a673163b2f5815111aadc7f7"
        }
      ],
      "title": "xfs: restore nofs context unconditionally in xfs_trans_roll",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80804",
    "datePublished": "2026-09-04T15:13:18.282Z",
    "dateReserved": "2026-08-26T14:34:25.794Z",
    "dateUpdated": "2026-10-19T08:43:57.464Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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