PT-2026-34385 · Linux · Linux Kernel

Published 2026-04-22 · Updated 2026-04-22 · CVE-2026-31480

Positive Technologies (AI Summary)

Name of the Vulnerable Software and Affected Versions Linux kernel (affected versions not specified)

Description A potential deadlock exists in the tracing component during CPU hotplug operations involving osnoise. The issue occurs when a specific sequence of events involving mutex lock(&interface lock) and cpus write lock() leads to a state where tasks are mutually waiting for locks, causing the system to hang.

Recommendations Swap the order of cpus read lock() and mutex lock(&interface lock) to resolve the deadlock.

Related Identifiers

CVE-2026-31480

Affected Products

Linux Kernel

References · 9

• https://nvd.nist.gov/vuln/detail/CVE-2026-31480 · Security Note
• https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 · Note
• https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f · Note
• https://twitter.com/CVEnew/status/2046980002176979417 · Twitter Post
• https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f · Note
• https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55 · Note
• https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831 · Note
• https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa · Note
• https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da · Note