SB2025020436 - Improper locking in Linux kernel openvswitch
Published: February 4, 2025 Updated: May 11, 2025
Security Bulletin ID
SB2025020436
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) Improper locking (CVE-ID: CVE-2025-21681)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to improper locking within the do_output() function in net/openvswitch/actions.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/47e55e4b410f7d552e43011baa5be1aab4093990
- https://git.kernel.org/stable/c/82f433e8dd0629e16681edf6039d094b5518d8ed
- https://git.kernel.org/stable/c/ea966b6698785fb9cd0fdb867acd91b222e4723f
- https://git.kernel.org/stable/c/ea9e990356b7bee95440ba0e6e83cc4d701afaca
- https://mirrors.edge.kernel.org/pub/linux/kernel/v6.x/ChangeLog-6.1.127