SB2025012021 - Out-of-bounds read in Linux kernel sched
Published: January 20, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025012021
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-2025-21653)
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 NLA_POLICY_MAX() function in net/sched/cls_flow.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/2011749ca96460386844dfc7e0fde53ebee96f3c
- https://git.kernel.org/stable/c/6fde663f7321418996645ee602a473457640542f
- https://git.kernel.org/stable/c/a039e54397c6a75b713b9ce7894a62e06956aa92
- https://git.kernel.org/stable/c/e54beb9aed2a90dddf4c5d68fcfc9a01f3e40a61
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.6.72