Vulnerability-Lookup

GHSA-M2XQ-P36J-8H55

Vulnerability from github – Published: 2026-09-04 18:31 – Updated: 2026-09-04 18:31

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-80804"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T16:18:07Z",
    "severity": null
  },
  "details": "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.",
  "id": "GHSA-m2xq-p36j-8h55",
  "modified": "2026-09-04T18:31:26Z",
  "published": "2026-09-04T18:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-80804"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0241ea5fb0fe86d2a673163b2f5815111aadc7f7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4d00a39c676274f4071b467e630565ac1e3ae0f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b09198cf90ccf296970b774beea1c1ddb260f94c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-80804 (GCVE-0-2026-80804)

Vulnerability from cvelistv5 – Published: 2026-09-04 15:13 – Updated: 2026-09-04 15:13

Title

xfs: restore nofs context unconditionally in xfs_trans_roll

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.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/b09198cf90ccf2969…
https://git.kernel.org/stable/c/4d00a39c676274f40…
https://git.kernel.org/stable/c/0241ea5fb0fe86d2a…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: a1ca658d649a4d8972e2e21ac2625b633217e327 , < b09198cf90ccf296970b774beea1c1ddb260f94c (git) Affected: a1ca658d649a4d8972e2e21ac2625b633217e327 , < 4d00a39c676274f4071b467e630565ac1e3ae0f2 (git) Affected: a1ca658d649a4d8972e2e21ac2625b633217e327 , < 0241ea5fb0fe86d2a673163b2f5815111aadc7f7 (git)
Linux	Linux	Affected: 7.0 Unaffected: 0 , < 7.0 (semver) Unaffected: 7.1.11 , ≤ 7.1.* (semver) Unaffected: 7.2.1 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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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": [
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              "status": "affected",
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              "versionType": "git"
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              "status": "affected",
              "version": "a1ca658d649a4d8972e2e21ac2625b633217e327",
              "versionType": "git"
            },
            {
              "lessThan": "0241ea5fb0fe86d2a673163b2f5815111aadc7f7",
              "status": "affected",
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              "versionType": "git"
            }
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7.0"
            },
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
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              "status": "unaffected",
              "version": "7.2.1",
              "versionType": "semver"
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        }
      ],
      "cpeApplicability": [
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          "nodes": [
            {
              "cpeMatch": [
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                  "versionStartIncluding": "7.0",
                  "vulnerable": true
                },
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                },
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                  "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": "2026-09-04T15:13:18.282Z",
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        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/0241ea5fb0fe86d2a673163b2f5815111aadc7f7"
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      "title": "xfs: restore nofs context unconditionally in xfs_trans_roll",
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    "dateReserved": "2026-08-26T14:34:25.794Z",
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}

Sightings

Author	Source	Type	Date	Other

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.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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