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).
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < cf929c21eeed5bd39873fb14bfdfff963fa6f1da; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < 7aa095ce7d224308cb6979956f0de8607df93d4f; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < ef41a85a55022e27cdaebf22a6676910b66f65aa; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < 03474a01c199de17a8e2d39b51df6beb9c76e831; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < 7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f; >= bce29ac9ce0bb0b0b146b687ab978378c21e9078, < 1f9885732248d22f788e4992c739a98c88ab8a55 |
| Linux | Linux | 5.14 |
References
- https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831Patch
- https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55Patch
- https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9fPatch
- https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4fPatch
- https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1daPatch
- https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aaPatch
- https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7Patch
Timeline
- Published
- Apr 22, 2026
- Last modified
- Nov 11, 2026
- NVD status
- Analyzed