CVE-2024-42079 — NULL Pointer Dereference in Linux
Severity
5.5MEDIUMNVD
OSV8.8
EPSS
0.1%
top 79.78%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedJul 29
Latest updateJan 20
Description
In the Linux kernel, the following vulnerability has been resolved:
gfs2: Fix NULL pointer dereference in gfs2_log_flush
In gfs2_jindex_free(), set sdp->sd_jdesc to NULL under the log flush
lock to provide exclusion against gfs2_log_flush().
In gfs2_log_flush(), check if sdp->sd_jdesc is non-NULL before
dereferencing it. Otherwise, we could run into a NULL pointer
dereference when outstanding glock work races with an unmount
(glock_work_func -> run_queue -> do_xmote -> inode_go_sync ->
gfs2_l…
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6