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
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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)
Create a notification for this product.
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)
Create a notification for this product.
Show details on NVD website
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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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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T17:36:32+00:00",
      "cve": "CVE-2026-53048",
      "id": "CVE-2026-53048",
      "initial_release_date": "2026-06-24T00:00:00+00:00",
      "product_status:known_affected": "170",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: gfs2: prevent NULL pointer dereference during unmount",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53048.json",
      "version": "3"
    },
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      "cve": "CVE-2026-53048",
      "id": "CVE-2026-53048",
      "initial_release_date": "2026-06-26T02:12:58Z",
      "product_status:known_affected": "162",
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      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-53048",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-53048.json",
      "version": "3"
    }
  }
}



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  • 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.