tracing: Fix potential deadlock in cpu hotplug with osnoise
Summary
| CVE | CVE-2026-31480 |
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| State | PUBLISHED |
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| Assigner | Linux |
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| Source Priority | CVE Program / NVD first with legacy fallback |
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| Published | 2026-04-22 14:16:45 UTC |
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| Updated | 2026-04-22 14:16:45 UTC |
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| 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). |
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Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 cf929c21eeed5bd39873fb14bfdfff963fa6f1da git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 7aa095ce7d224308cb6979956f0de8607df93d4f git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 ef41a85a55022e27cdaebf22a6676910b66f65aa git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 03474a01c199de17a8e2d39b51df6beb9c76e831 git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f git |
Not specified |
| CNA |
Linux |
Linux |
affected bce29ac9ce0bb0b0b146b687ab978378c21e9078 1f9885732248d22f788e4992c739a98c88ab8a55 git |
Not specified |
| CNA |
Linux |
Linux |
affected 5.14 |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.14 semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 5.15.203 5.15.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.1.168 6.1.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.6.131 6.6.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.12.80 6.12.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.18.21 6.18.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 6.19.11 6.19.* semver |
Not specified |
| CNA |
Linux |
Linux |
unaffected 7.0 * original_commit_for_fix |
Not specified |
References
| Reference | Source | Link | Tags |
|---|
| git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 |
416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
git.kernel.org |
|
| CVE Program record |
CVE.ORG |
www.cve.org |
canonical |
| NVD vulnerability detail |
NVD |
nvd.nist.gov |
canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.
