SB20250916141 - Out-of-bounds read in Linux kernel s390 kvm
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916141
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) Out-of-bounds read (CVE-ID: CVE-2023-53205)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an out-of-bounds read error within the diag9c_forwarding_overrun() and __diag_time_slice_end_directed() functions in arch/s390/kvm/diag.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/0bc380beb78aa352eadbc21d934dd9606fcee808
- https://git.kernel.org/stable/c/86bfb18bad60fc468e5f112cbbd918462a8dd435
- https://git.kernel.org/stable/c/a9ccf140a2a03a0ae82be4bdfbdd17bdaea72ff5
- https://git.kernel.org/stable/c/dc7e0192c470a53d847c79a2796f9ac429477a26
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.4.4