CVE-2026-23357

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2026-23357
In the Linux kernel, the following vulnerability has been resolved: can: mcp251x: fix deadlock in error path of mcp251x_open The mcp251x_open() function call free_irq() in its error path with the mpc_lock mutex held. But if an interrupt already occurred the interrupt handler will be waiting for the mpc_lock and free_irq() will deadlock waiting for the handler to finish. This issue is similar to the one fixed in commit 7dd9c26bd6cf ("can: mcp251x: fix deadlock if an interrupt occurs during mcp251x_open") but for the error path. To solve this issue move the call to free_irq() after the lock is released. Setting `priv->force_quit = 1` beforehand ensure that the IRQ handler will exit right away once it acquired the 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/256f0cff6e946c570392bda1d01a65e789a7afd0 Patch
https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508 Patch
https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16 Patch
https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c Patch
https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885 Patch
https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b Patch
https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e Patch
https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e 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:2.6.34:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
History

24 Apr 2026, 19:04

Type Values Removed Values Added
References () https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0 - () https://git.kernel.org/stable/c/256f0cff6e946c570392bda1d01a65e789a7afd0 - Patch
References () https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508 - () https://git.kernel.org/stable/c/38063cc435b69d56e76f947c10d336fcb2953508 - Patch
References () https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16 - () https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16 - Patch
References () https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c - () https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c - Patch
References () https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885 - () https://git.kernel.org/stable/c/ab3f894de216f4a62adc3b57e9191888cbf26885 - Patch
References () https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b - () https://git.kernel.org/stable/c/b73832292cd914e87a55e863ba4413a907e7db6b - Patch
References () https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e - () https://git.kernel.org/stable/c/d27f12c3f5e85efc479896af4a69eccb37f75e8e - Patch
References () https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e - () https://git.kernel.org/stable/c/e728f444c913a91d290d1824b4770780bbd6378e - Patch
CPE cpe:2.3:o:linux:linux_kernel:7.0:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc7:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:2.6.34:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:7.0:rc5:*:*:*:*:*:*
First Time Linux
Linux linux Kernel
CWE CWE-667
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

18 Apr 2026, 09:16

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/416c18ecddafab0ed09be1e7b9d2f448f3d4db16 -
  • () https://git.kernel.org/stable/c/739454057572cb0948658d1142f3fa2c6966465c -
Summary
  • (es) En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta: can: mcp251x: corregir interbloqueo en la ruta de error de mcp251x_open La función mcp251x_open() llama a free_irq() en su ruta de error con el mutex mpc_lock retenido. Pero si ya ocurrió una interrupción, el gestor de interrupciones estará esperando por el mpc_lock y free_irq() se interbloqueará esperando a que el gestor termine. Este problema es similar al resuelto en el commit 7dd9c26bd6cf ('can: mcp251x: corregir interbloqueo si ocurre una interrupción durante mcp251x_open') pero para la ruta de error. Para resolver este problema, mueva la llamada a free_irq() después de que se libere el bloqueo. Establecer `priv->force_quit = 1` de antemano asegura que el gestor IRQ saldrá de inmediato una vez que haya adquirido el bloqueo.

25 Mar 2026, 11:16

Type Values Removed Values Added
New CVE
Information

Published : 2026-03-25 11:16

Updated : 2026-04-24 19:04

NVD link : CVE-2026-23357

Mitre link : CVE-2026-23357

CVE.ORG link : CVE-2026-23357

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking