gfs2: prevent NULL pointer dereference during unmount
3Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackepss 0.1%
exploitation probability
0.1%top 98% of all CVEs
observed exploitation
nono source reports it
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
Linux · LinuxReferences
https://git.kernel.org/stable/c/233a0945a4b1dbe3f38c30afb7d05b76c67f1193https://git.kernel.org/stable/c/2fc4c868c9060f424fd4a7cacb0aec5082aba4dehttps://git.kernel.org/stable/c/74b4dbb946060a3233604d91859a9abd3708141dhttps://git.kernel.org/stable/c/abd73229f0e886a91a16ea781ab656bd9b4d1ee8https://git.kernel.org/stable/c/cec55674354794eddb80b914f73a6bf9b7fc304ahttps://git.kernel.org/stable/c/d8ffae016c4a78693fe1283335d0b6833a9c1366https://git.kernel.org/stable/c/e15f16761594e80b15776980b27c35477655a135