SB20250916145 - Out-of-bounds read in Linux kernel s390 cio driver
Published: September 16, 2025 Updated: September 22, 2025
Security Bulletin ID
SB20250916145
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-2022-50307)
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 __unset_online() function in drivers/s390/cio/css.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/0e501fd0f38e42304bfa0d46a812d93f80294a87
- https://git.kernel.org/stable/c/106ab66cf5467726ca5ead51623043d37c06820a
- https://git.kernel.org/stable/c/1b6074112742f65ece71b0f299ca5a6a887d2db6
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.78
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.0.7
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1