CVE-2023-4385 MEDIUM

CVE-2023-4385: Kernel: jfs: null pointer dereference in dbfree()

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-476
Published August 16, 2023
Last update November 20, 2025
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

August 16, 2023 CVE published
November 20, 2025 Record updated