CVE-2026-31480
N/A
N/A
Summary
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).
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < cf929c21eeed5bd39873fb14bfdfff963fa6f1da | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < 7aa095ce7d224308cb6979956f0de8607df93d4f | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < ef41a85a55022e27cdaebf22a6676910b66f65aa | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < 03474a01c199de17a8e2d39b51df6beb9c76e831 | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < 7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f | affected |
| Linux | Linux | bce29ac9ce0bb0b0b146b687ab978378c21e9078 < 1f9885732248d22f788e4992c739a98c88ab8a55 | affected |
| Linux | Linux | 5.14 | affected |
| Linux | Linux | 0 < 5.14 | unaffected |
| Linux | Linux | 5.15.203 <= 5.15.* | unaffected |
| Linux | Linux | 6.1.168 <= 6.1.* | unaffected |
| Linux | Linux | 6.6.131 <= 6.6.* | unaffected |
| Linux | Linux | 6.12.80 <= 6.12.* | unaffected |
| Linux | Linux | 6.18.21 <= 6.18.* | unaffected |
| Linux | Linux | 6.19.11 <= 6.19.* | unaffected |
| Linux | Linux | 7.0 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da
- https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f
- https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa
- https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831
- https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7
- https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f
- https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55
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