SB20250226252 - Use-after-free in Linux kernel ext4
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226252
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-49349)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the ext4_get_first_dir_block() function in fs/ext4/namei.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/0be698ecbe4471fcad80e81ec6a05001421041b3
- https://git.kernel.org/stable/c/0ff38b99fa075ddd246487a28cb9af049f4ceef1
- https://git.kernel.org/stable/c/10801095224de0d0ab06ae60698680c1f883a3ae
- https://git.kernel.org/stable/c/1a3a15bf6f9963d755270cbdb282863b84839195
- https://git.kernel.org/stable/c/364380c00912bed9b5d99eb485018360b0ecf64f
- https://git.kernel.org/stable/c/4a2bea60cf7ff957b3eda0b17750d483876a02fa
- https://git.kernel.org/stable/c/97f802a652a749422dede32071d29a53cf4bd034
- https://git.kernel.org/stable/c/dd887f83ea54aea5b780a84527e23ab95f777fed
- https://git.kernel.org/stable/c/eaecf7ebfd5dd09038a80b14be46b844f54cfc5c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.198