Vulnerability Description
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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | >= 5.15.200, < 5.15.209 |
Related Weaknesses (CWE)
References
- https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193Patch
- https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4dePatch
- https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141dPatch
- https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8Patch
- https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304aPatch
- https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366Patch
- https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135Patch
FAQ
What is CVE-2026-53048?
CVE-2026-53048 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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()...
How severe is CVE-2026-53048?
CVE-2026-53048 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-53048?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.