5.5

CVE-2024-42079

gfs2: Fix NULL pointer dereference in gfs2_log_flush

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_log_flush).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 6.6.37
Linux ≫ Linux Kernel Version >= 6.7 < 6.9.8
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.27% 0.18
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 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/3429ef5f50909cee9e498c50f0c499b9397116ce
Patch
https://git.kernel.org/stable/c/35264909e9d1973ab9aaa2a1b07cda70f12bb828
Patch
https://git.kernel.org/stable/c/f54f9d5368a4e92ede7dd078a62788dae3a7c6ef
Patch
https://git.kernel.org/stable/c/5f6a84cfb33b34610623857bd93919dcb661e29b
Patch
https://git.kernel.org/stable/c/c3c5cfa3170c0940bc66a142859caac07d19b9d6
Patch