5.5

CVE-2026-53048

gfs2: prevent NULL pointer dereference during unmount

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.15.200 < 5.15.209
Linux ≫ Linux Kernel Version >= 6.1.162 < 6.1.175
Linux ≫ Linux Kernel Version >= 6.6.37 < 6.6.141
Linux ≫ Linux Kernel Version >= 6.9.8 < 6.12.91
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.33
Linux ≫ Linux Kernel Version >= 6.19 < 7.0.10
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EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.12% 0.024
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 NULL Pointer Dereference

The product dereferences a pointer that it expects to be valid but is NULL.

https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304a
Patch
https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4de
Patch
https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193
Patch
https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135
Patch
https://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366
Patch
https://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8
Patch
https://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141d
Patch