CVE-2023-53786
dm flakey: fix a crash with invalid table line
Vexday Risk Score
3Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS —EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —
Lifecycle
09 Dec 2025Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
In the Linux kernel, the following vulnerability has been resolved:
dm flakey: fix a crash with invalid table line
This command will crash with NULL pointer dereference:
dmsetup create flakey --table \
"0 `blockdev --getsize /dev/ram0` flakey /dev/ram0 0 0 1 2 corrupt_bio_byte 512"
Fix the crash by checking if arg_name is non-NULL before comparing it.
Affected products
Linux · LinuxReferences
https://git.kernel.org/stable/c/12849ed107c0b2869fb775c81208050899006f07https://git.kernel.org/stable/c/337b7af273562b73c46ef77a724604ad139ca762https://git.kernel.org/stable/c/8258d84a7917aeece773716518deadb7ad776cb7https://git.kernel.org/stable/c/83b4e3d878ea6be9aec1d5a1ab177c766c64d1a0https://git.kernel.org/stable/c/98dba02d9a93eec11bffbb93c7c51624290702d2https://git.kernel.org/stable/c/a1e3fffe02e05c05357af91364ac0fc1ed425b5bhttps://git.kernel.org/stable/c/cb874a190f3f7c3c3fa5b979bee7a3b8cc3a19cchttps://git.kernel.org/stable/c/f76fcb9d43ec014ac4a1bb983768696d5b032df9https://git.kernel.org/stable/c/f95cb1526669ccdf7eb12eefd57a893953e3595f