Vulnerability-Lookup

GHSA-X2X3-CMVW-67W8

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-07-21 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

gfs2: prevent NULL pointer dereference during unmount

When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that.

Severity

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2026-53048"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:16Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: prevent NULL pointer dereference during unmount\n\nWhen flushing out outstanding glock work during an unmount, gfs2_log_flush()\ncan be called when sdp-\u003esd_jdesc has already been deallocated and sdp-\u003esd_jdesc\nis NULL.  Commit 35264909e9d1 (\"gfs2: Fix NULL pointer dereference in\ngfs2_log_flush\") added a check for that to gfs2_log_flush() itself, but it\nmissed the sdp-\u003esd_jdesc dereference in gfs2_log_release().  Fix that.",
  "id": "GHSA-x2x3-cmvw-67w8",
  "modified": "2026-07-21T18:30:36Z",
  "published": "2026-06-24T18:32:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53048"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-53048 (GCVE-0-2026-53048)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-06-24 16:29

Title

gfs2: prevent NULL pointer dereference during unmount

Summary

In the Linux kernel, the following vulnerability has been resolved: gfs2: prevent NULL pointer dereference during unmount When flushing out outstanding glock work during an unmount, gfs2_log_flush() can be called when sdp->sd_jdesc has already been deallocated and sdp->sd_jdesc is NULL. Commit 35264909e9d1 ("gfs2: Fix NULL pointer dereference in gfs2_log_flush") added a check for that to gfs2_log_flush() itself, but it missed the sdp->sd_jdesc dereference in gfs2_log_release(). Fix that.

Severity

No CVSS data available.

Assigner

Linux

References

7 references

URL	Tags
https://git.kernel.org/stable/c/cec55674354794edd…
https://git.kernel.org/stable/c/2fc4c868c9060f424…
https://git.kernel.org/stable/c/233a0945a4b1dbe3f…
https://git.kernel.org/stable/c/e15f16761594e80b1…
https://git.kernel.org/stable/c/d8ffae016c4a78693…
https://git.kernel.org/stable/c/abd73229f0e886a91…
https://git.kernel.org/stable/c/74b4dbb946060a323…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c3c5cfa3170c0940bc66a142859caac07d19b9d6 , < cec55674354794eddb80b914f73a6bf9b7fc304a (git) Affected: 5f6a84cfb33b34610623857bd93919dcb661e29b , < 2fc4c868c9060f424fd4a7cacb0aec5082aba4de (git) Affected: 3429ef5f50909cee9e498c50f0c499b9397116ce , < 233a0945a4b1dbe3f38c30afb7d05b76c67f1193 (git) Affected: 35264909e9d1973ab9aaa2a1b07cda70f12bb828 , < e15f16761594e80b15776980b27c35477655a135 (git) Affected: 35264909e9d1973ab9aaa2a1b07cda70f12bb828 , < d8ffae016c4a78693fe1283335d0b6833a9c1366 (git) Affected: 35264909e9d1973ab9aaa2a1b07cda70f12bb828 , < abd73229f0e886a91a16ea781ab656bd9b4d1ee8 (git) Affected: 35264909e9d1973ab9aaa2a1b07cda70f12bb828 , < 74b4dbb946060a3233604d91859a9abd3708141d (git) Affected: f54f9d5368a4e92ede7dd078a62788dae3a7c6ef (git) Affected: 5.15.200 , < 5.15.209 (semver) Affected: 6.1.162 , < 6.1.175 (semver) Affected: 6.6.37 , < 6.6.141 (semver) Affected: 6.9.8 , < 6.10 (semver)
Linux	Linux	Affected: 6.10 Unaffected: 0 , < 6.10 (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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{
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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.

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GHSA-X2X3-CMVW-67W8

CVE-2026-53048 (GCVE-0-2026-53048)

Tags

Sightings

Nomenclature