SB20251230276 - Improper error handling in Linux kernel pstore
Published: December 30, 2025 Updated: December 30, 2025
Security Bulletin ID
SB20251230276
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) Improper error handling (CVE-ID: CVE-2022-50849)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper error handling within the persistent_ram_vmap() function in fs/pstore/ram_core.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/1579bed1613802a323a1e14567faa95c149e105e
- https://git.kernel.org/stable/c/295f59cd2cdeed841850d02dddde3a122cbf6fc6
- https://git.kernel.org/stable/c/2f82381d0681b10f9ddd27be98c27363b5a3cd1c
- https://git.kernel.org/stable/c/4d3126f242a0090342ffe925c35fb4f4252b7562
- https://git.kernel.org/stable/c/69dbff7d2681c55a4d979fd9b75576303e69979f
- https://git.kernel.org/stable/c/6d9460214e363e1f3d0756ee5d947e76e3e6f86c
- https://git.kernel.org/stable/c/e6b842741b4f39007215fd7e545cb55aa3d358a2
- https://git.kernel.org/stable/c/ebc73c4f266281e2cad1a372ecd81572d95375b6
- https://git.kernel.org/stable/c/fdebcc33b663d2e8da937653ddfbfc1315047eaa
- https://mirrors.edge.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.303