5.5

CVE-2026-31480

tracing: Fix potential deadlock in cpu hotplug with osnoise

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).
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 5.14.1 < 5.15.203
Linux ≫ Linux Kernel Version >= 5.16 < 6.1.168
Linux ≫ Linux Kernel Version >= 6.2 < 6.6.131
Linux ≫ Linux Kernel Version >= 6.7 < 6.12.80
Linux ≫ Linux Kernel Version >= 6.13 < 6.18.21
Linux ≫ Linux Kernel Version >= 6.19 < 6.19.11
Linux ≫ Linux Kernel Version5.14 Update-
Linux ≫ Linux Kernel Version7.0 Updaterc1
Linux ≫ Linux Kernel Version7.0 Updaterc2
Linux ≫ Linux Kernel Version7.0 Updaterc3
Linux ≫ Linux Kernel Version7.0 Updaterc4
Linux ≫ Linux Kernel Version7.0 Updaterc5
Linux ≫ Linux Kernel Version7.0 Updaterc6
Linux ≫ Linux Kernel Version7.0 Updaterc7
VulnDex Vulnerability Enrichment
Diese Information steht angemeldeten Benutzern zur Verfügung. Login Login
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.1% 0.008
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-667 Improper Locking

The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.

https://git.kernel.org/stable/c/03474a01c199de17a8e2d39b51df6beb9c76e831
Patch
https://git.kernel.org/stable/c/1f9885732248d22f788e4992c739a98c88ab8a55
Patch
https://git.kernel.org/stable/c/7a41d4633cd2c15eb5ed31e8f3b16910e50a8c9f
Patch
https://git.kernel.org/stable/c/7aa095ce7d224308cb6979956f0de8607df93d4f
Patch
https://git.kernel.org/stable/c/cf929c21eeed5bd39873fb14bfdfff963fa6f1da
Patch
https://git.kernel.org/stable/c/ef41a85a55022e27cdaebf22a6676910b66f65aa
Patch
https://git.kernel.org/stable/c/f278b8ebf7eba2a1699cfc7bf30dd3ef898d60d7
Patch