SB2025061979 - Memory leak in Linux kernel netlink
Published: June 19, 2025 Updated: June 21, 2025
Security Bulletin ID
SB2025061979
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) Memory leak (CVE-ID: CVE-2022-50042)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak within the netlink_policy_dump_add_policy() function in net/netlink/policy.c, within the ctrl_dumppolicy_start() function in net/netlink/genetlink.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/249801360db3dec4f73768c502192020bfddeacc
- https://git.kernel.org/stable/c/26b6acd365823e99e46be3b27500f5dc235dda5e
- https://git.kernel.org/stable/c/83411c9f05d5a8b637293b3389eca3d378197c04
- https://git.kernel.org/stable/c/b0672895d8be5d19d4b05ac83f807026fc791037
- https://mirrors.edge.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.15.63