CVE-2022-49313

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2022-49313
In the Linux kernel, the following vulnerability has been resolved: drivers: usb: host: Fix deadlock in oxu_bus_suspend() There is a deadlock in oxu_bus_suspend(), which is shown below: (Thread 1) | (Thread 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (wait a time) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (wait timer to stop) | ... We hold oxu->lock in position (1) of thread 1, and use del_timer_sync() to wait timer to stop, but timer handler also need oxu->lock in position (2) of thread 2. As a result, oxu_bus_suspend() will block forever. This patch extracts del_timer_sync() from the protection of spin_lock_irq(), which could let timer handler to obtain the needed lock.

5.5 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://git.kernel.org/stable/c/2dcec0bc142be2096af71a5703d63237127db204 Patch
https://git.kernel.org/stable/c/4187b291a76664a3c03d3f0d9bfadc8322881868 Patch
https://git.kernel.org/stable/c/4d378f2ae58138d4c55684e1d274e7dd94aa6524 Patch
https://git.kernel.org/stable/c/9b58d255f27b0ed6a2e43208960864d67579db58 Patch
https://git.kernel.org/stable/c/a3d380188bde8900c3f604e82b56572896499124 Patch
https://git.kernel.org/stable/c/b97aae8b43b718314012e8170b7e03dbfd2e7677 Patch
https://git.kernel.org/stable/c/d888753872190abd18f68a7d77b9c7c367f0a7ab Patch
https://git.kernel.org/stable/c/f8242044c91cafbba9e320b0fb31abf2429a3221 Patch
https://git.kernel.org/stable/c/ffe9440d698274c6462d2e304562c6ddfc8c84df Patch
Configurations

Configuration 1 (hide)

OR cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

14 Apr 2025, 19:59

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
References () https://git.kernel.org/stable/c/2dcec0bc142be2096af71a5703d63237127db204 - () https://git.kernel.org/stable/c/2dcec0bc142be2096af71a5703d63237127db204 - Patch
References () https://git.kernel.org/stable/c/4187b291a76664a3c03d3f0d9bfadc8322881868 - () https://git.kernel.org/stable/c/4187b291a76664a3c03d3f0d9bfadc8322881868 - Patch
References () https://git.kernel.org/stable/c/4d378f2ae58138d4c55684e1d274e7dd94aa6524 - () https://git.kernel.org/stable/c/4d378f2ae58138d4c55684e1d274e7dd94aa6524 - Patch
References () https://git.kernel.org/stable/c/9b58d255f27b0ed6a2e43208960864d67579db58 - () https://git.kernel.org/stable/c/9b58d255f27b0ed6a2e43208960864d67579db58 - Patch
References () https://git.kernel.org/stable/c/a3d380188bde8900c3f604e82b56572896499124 - () https://git.kernel.org/stable/c/a3d380188bde8900c3f604e82b56572896499124 - Patch
References () https://git.kernel.org/stable/c/b97aae8b43b718314012e8170b7e03dbfd2e7677 - () https://git.kernel.org/stable/c/b97aae8b43b718314012e8170b7e03dbfd2e7677 - Patch
References () https://git.kernel.org/stable/c/d888753872190abd18f68a7d77b9c7c367f0a7ab - () https://git.kernel.org/stable/c/d888753872190abd18f68a7d77b9c7c367f0a7ab - Patch
References () https://git.kernel.org/stable/c/f8242044c91cafbba9e320b0fb31abf2429a3221 - () https://git.kernel.org/stable/c/f8242044c91cafbba9e320b0fb31abf2429a3221 - Patch
References () https://git.kernel.org/stable/c/ffe9440d698274c6462d2e304562c6ddfc8c84df - () https://git.kernel.org/stable/c/ffe9440d698274c6462d2e304562c6ddfc8c84df - Patch
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drivers: usb: host: Corregir interbloqueo en oxu_bus_suspend() Hay un interbloqueo en oxu_bus_suspend(), que se muestra a continuación: (Hilo 1) | (Hilo 2) | timer_action() oxu_bus_suspend() | mod_timer() spin_lock_irq() //(1) | (esperar un tiempo) ... | oxu_watchdog() del_timer_sync() | spin_lock_irq() //(2) (esperar a que el temporizador se detenga) | ... Mantenemos oxu->lock en la posición (1) del hilo 1, y usamos del_timer_sync() para esperar a que el temporizador se detenga, pero el controlador del temporizador también necesita oxu->lock en la posición (2) del hilo 2. Como resultado, oxu_bus_suspend() se bloqueará para siempre. Este parche extrae del_timer_sync() de la protección de spin_lock_irq(), lo que podría permitir que el controlador del temporizador obtenga el bloqueo necesario.
CWE CWE-667

26 Feb 2025, 07:01

Type Values Removed Values Added
New CVE
Information

Published : 2025-02-26 07:01

Updated : 2025-04-14 19:59

NVD link : CVE-2022-49313

Mitre link : CVE-2022-49313

CVE.ORG link : CVE-2022-49313

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking