SB20250226420 - NULL pointer dereference in Linux kernel mm
Published: February 26, 2025 Updated: May 11, 2025
Security Bulletin ID
SB20250226420
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) NULL pointer dereference (CVE-ID: CVE-2022-49554)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to NULL pointer dereference within the putback_zspage() function in mm/zsmalloc.c. A local user can perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/2505a981114dcb715f8977b8433f7540854851d8
- https://git.kernel.org/stable/c/3674d8a8dadd03a447dd21069d4dacfc3399b63b
- https://git.kernel.org/stable/c/3ec459c8810e658401be428d3168eacfc380bdd0
- https://git.kernel.org/stable/c/645996efc2ae391246d595832aaa6f9d3cc338c7
- https://git.kernel.org/stable/c/8ba7b7c1dad1f6503c541778f31b33f7f62eb966
- https://git.kernel.org/stable/c/c5402fb5f71f1a725f1e55d9c6799c0c7bec308f
- https://git.kernel.org/stable/c/fae05b2314b147a78fbed1dc4c645d9a66313758
- https://git.kernel.org/stable/c/fc658c083904427abbf8f18280d517ee2668677c
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.4.197