SB20260424231 - Deadlock in Linux kernel trace
Published: April 24, 2026
Security Bulletin ID
SB20260424231
CSH 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 vulnerability.
1) Deadlock (CVE-ID: CVE-2026-31480)
CWE-ID: CWE-833 - Deadlock
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to cause a denial of service.
The vulnerability exists due to a deadlock condition in the osnoise cpu hotplug handling logic when processing cpu hotplug events while osnoise sleep paths contend for interface_lock. A local user can trigger cpu hotplug activity to cause a denial of service.
Remediation
Install update from vendor's website.
References
- https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831
- https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55
- https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f
- https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f
- https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da
- https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa
- https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7