SB20251226263 - Input validation error in Linux kernel s390 mm
Published: December 26, 2025 Updated: December 31, 2025
Security Bulletin ID
SB20251226263
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) Input validation error (CVE-ID: CVE-2023-54092)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper input validation within the s390_replace_asce() function in arch/s390/mm/gmap.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/017f686bcb536ff23d49c143fdf9d1fd89a9a924
- https://git.kernel.org/stable/c/49a2686adddebe1ae76b4d368383208656ef6606
- https://git.kernel.org/stable/c/8e635da0e0d3cb45e32fa79b36218fb98281bc10
- https://git.kernel.org/stable/c/c2fceb59bbda16468bda82b002383bff59de89ab
- https://git.kernel.org/stable/c/f1c7a776338f2ac5e34da40e58fe9f33ea390a5e
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.8