CVE-2026-31480 Details
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).
A potential deadlock vulnerability has been identified in the Linux kernel's CPU hotplug process, specifically within the OS noise tracer. This issue arises when certain mutex and CPU lock operations are not properly sequenced, leading to a deadlock situation. The vulnerability affects the Linux kernel stable tree.
The vulnerability has been addressed by changing the order of the CPU read lock and the interface mutex lock in the OS noise tracer's handling of CPU hotplug events.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831 | kernel.org | Patch |
| https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55 | kernel.org | Patch |
| https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f | kernel.org | Patch |
| https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f | kernel.org | Patch |
| https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da | kernel.org | Patch |
| https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa | kernel.org | Patch |
| https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7 | kernel.org | Patch |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-667 | Improper Locking | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| linux linux kernel | >= 5.14.1, < 5.15.203 >= 5.16, < 6.1.168 >= 6.2, < 6.6.131 >= 6.7, < 6.12.80 >= 6.13, < 6.18.21 >= 6.19, < 6.19.11 5.14 - 7.0 rc1 7.0 rc2 7.0 rc3 7.0 rc4 7.0 rc5 7.0 rc6 7.0 rc7 |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | kernel.org |
| Apr 27, 2026 | Initial Analysis | [email protected] |
| Apr 22, 2026 | New CVE Received | kernel.org |