CVE-2026-53048
Medium
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.
SeverityMedium
CVSS5.5
Exploit probability—
Product
Linux Kernel
PublishedJun 24, 2026
First seenJun 24, 2026
Weakness typeCWE-476NULL pointer dereference
How to fix
Update
- linux linux_kernel5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10 or later
Patches
- git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193
- git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de
- git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d
- git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8
- git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a
- git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366
- git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 5.15.200 ≤ v < 5.15.209, 6.1.162 ≤ v < 6.1.175, 6.6.37 ≤ v < 6.6.141, 6.9.8 ≤ v < 6.12.91, 6.13 ≤ v < 6.18.33, 6.19 ≤ v < 7.0.10 | 5.15.209, 6.1.175, 6.6.141, 6.12.91, 6.18.33, 7.0.10 |
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