CVE-2026-53048: gfs2: prevent NULL pointer dereference during unmount

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

c3c5cfa3170c0940bc66a142859caac07d19b9d6 to < cec55674354794eddb80b914f73a6bf9b7fc304aaffected
5f6a84cfb33b34610623857bd93919dcb661e29b to < 2fc4c868c9060f424fd4a7cacb0aec5082aba4deaffected
3429ef5f50909cee9e498c50f0c499b9397116ce to < 233a0945a4b1dbe3f38c30afb7d05b76c67f1193affected
35264909e9d1973ab9aaa2a1b07cda70f12bb828 to < e15f16761594e80b15776980b27c35477655a135affected
35264909e9d1973ab9aaa2a1b07cda70f12bb828 to < d8ffae016c4a78693fe1283335d0b6833a9c1366affected
35264909e9d1973ab9aaa2a1b07cda70f12bb828 to < abd73229f0e886a91a16ea781ab656bd9b4d1ee8affected
35264909e9d1973ab9aaa2a1b07cda70f12bb828 to < 74b4dbb946060a3233604d91859a9abd3708141daffected
f54f9d5368a4e92ede7dd078a62788dae3a7c6efaffected
5.15.200 to < 5.15.209affected
6.1.162 to < 6.1.175affected
6.6.37 to < 6.6.141affected
6.9.8 to < 6.10affected

Linux Linux

Default version status: affected

6.10affected
0 to < 6.10unaffected
5.15.209 to ≤ 5.15.*unaffected
6.1.175 to ≤ 6.1.*unaffected
6.6.141 to ≤ 6.6.*unaffected
6.12.91 to ≤ 6.12.*unaffected
6.18.33 to ≤ 6.18.*unaffected
7.0.10 to ≤ 7.0.*unaffected
7.1 to ≤ *unaffected

CVE-2026-53048

gfs2: prevent NULL pointer dereference during unmount

Description

Affected products

Linux Linux

Linux Linux

References