CVE-2023-4385: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A NULL pointer dereference flaw was found in dbFree in fs/jfs/jfs_dmap.c in the journaling file system (JFS) in the Linux Kernel. This issue may allow a local attacker to crash the system due to a missing sanity check.

Affected products

• Linux Linux Kernel: up to and including 5.18.19

Published 2023-08-16. Last modified 2026-06-17.