SB20250619169 - Use-after-free in Linux kernel s390 kernel
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB20250619169
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Use-after-free (CVE-ID: CVE-2022-49990)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the arch_dup_task_struct() and copy_thread() functions in arch/s390/kernel/process.c. A local user can escalate privileges on the system.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/13cccafe0edcd03bf1c841de8ab8a1c8e34f77d9
- https://git.kernel.org/stable/c/25a95303b9e513cd2978aacc385d06e6fec23d07
- https://git.kernel.org/stable/c/297ae7e87a87a001dd3dfeac1cb26a42fd929708
- https://git.kernel.org/stable/c/8195e065abf3df84eb0ad2987e76a40f21d1791c
- https://git.kernel.org/stable/c/cacd522e6652fbc2dc0cc6ae11c4e30782fef14b
- https://git.kernel.org/stable/c/fbdc482d43eda40a70de4b0155843d5472f6de62
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.19.6