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

Vulnerability from cvelistv5 – Published: 2026-06-24 16:29 – Updated: 2026-06-24 16:29
VLAI
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
References
Impacted 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)
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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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          "value": "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."
        }
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      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:29:54.268Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-06-24T16:29:54.268Z",
    "dateReserved": "2026-06-09T07:44:35.381Z",
    "dateUpdated": "2026-06-24T16:29:54.268Z",
    "state": "PUBLISHED"
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      "date": "2026-07-02",
      "epss": "0.00172",
      "percentile": "0.06896"
    },
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  }
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.