CVE-2026-31480

tracing: Fix potential deadlock in cpu hotplug with osnoise

State: Published
Severity: Not scored
Published: Apr 22, 2026
Updated: May 11, 2026
Reserved: Mar 9, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

tracing: Fix potential deadlock in cpu hotplug with osnoise

The following sequence may leads deadlock in cpu hotplug:

task1 task2 task3 ----- ----- -----

mutex_lock(&interface_lock)

[CPU GOING OFFLINE]

cpus_write_lock(); osnoise_cpu_die(); kthread_stop(task3); wait_for_completion();

osnoise_sleep(); mutex_lock(&interface_lock);

cpus_read_lock();

[DEAD LOCK]

Fix by swap the order of cpus_read_lock() and mutex_lock(&interface_lock).

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before cf929c21eeed5bd39873fb14bfdfff963fa6f1daAffected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 7aa095ce7d224308cb6979956f0de8607df93d4fAffected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before ef41a85a55022e27cdaebf22a6676910b66f65aaAffected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 03474a01c199de17a8e2d39b51df6beb9c76e831Affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7Affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9fAffected bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 1f9885732248d22f788e4992c739a98c88ab8a55Affected
LinuxLinux	5.14Affected before 5.14Not affected 5.15.203 through 5.15.Not affected 6.1.168 through 6.1.Not affected 6.6.131 through 6.6.Not affected 6.12.80 through 6.12.Not affected 6.18.21 through 6.18.Not affected 6.19.11 through 6.19.Not affected 7.0 and laterNot affected

Product

Versions

LinuxLinux

bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before cf929c21eeed5bd39873fb14bfdfff963fa6f1daAffected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 7aa095ce7d224308cb6979956f0de8607df93d4fAffected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before ef41a85a55022e27cdaebf22a6676910b66f65aaAffected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 03474a01c199de17a8e2d39b51df6beb9c76e831Affected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7Affected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9fAffected
bce29ac9ce0bb0b0b146b687ab978378c21e9078 to before 1f9885732248d22f788e4992c739a98c88ab8a55Affected

LinuxLinux

5.14Affected
before 5.14Not affected
5.15.203 through 5.15.*Not affected
6.1.168 through 6.1.*Not affected
6.6.131 through 6.6.*Not affected
6.12.80 through 6.12.*Not affected
6.18.21 through 6.18.*Not affected
6.19.11 through 6.19.*Not affected
7.0 and laterNot affected

References

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