CVE-2024-57946

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-57946
In the Linux kernel, the following vulnerability has been resolved: virtio-blk: don't keep queue frozen during system suspend Commit 4ce6e2db00de ("virtio-blk: Ensure no requests in virtqueues before deleting vqs.") replaces queue quiesce with queue freeze in virtio-blk's PM callbacks. And the motivation is to drain inflight IOs before suspending. block layer's queue freeze looks very handy, but it is also easy to cause deadlock, such as, any attempt to call into bio_queue_enter() may run into deadlock if the queue is frozen in current context. There are all kinds of ->suspend() called in suspend context, so keeping queue frozen in the whole suspend context isn't one good idea. And Marek reported lockdep warning[1] caused by virtio-blk's freeze queue in virtblk_freeze(). [1] https://lore.kernel.org/linux-block/ca16370e-d646-4eee-b9cc-87277c89c43c@samsung.com/ Given the motivation is to drain in-flight IOs, it can be done by calling freeze & unfreeze, meantime restore to previous behavior by keeping queue quiesced during suspend.

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/12c0ddd6c551c1e438b087f874b4f1223a75f7ea Patch
https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4 Patch
https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37 Patch
https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516 Patch
https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2 Patch
https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4 Patch
https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5 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:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*
History

28 Feb 2025, 18:59

Type Values Removed Values Added
CWE CWE-667
References () https://git.kernel.org/stable/c/12c0ddd6c551c1e438b087f874b4f1223a75f7ea - () https://git.kernel.org/stable/c/12c0ddd6c551c1e438b087f874b4f1223a75f7ea - Patch
References () https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4 - () https://git.kernel.org/stable/c/6dea8e3de59928974bf157dd0499d3958d744ae4 - Patch
References () https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37 - () https://git.kernel.org/stable/c/7678abee0867e6b7fb89aa40f6e9f575f755fb37 - Patch
References () https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516 - () https://git.kernel.org/stable/c/92d5139b91147ab372a17daf5dc27a5b9278e516 - Patch
References () https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2 - () https://git.kernel.org/stable/c/9ca428c6397abaa8c38f5c69133a2299e1efbbf2 - Patch
References () https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4 - () https://git.kernel.org/stable/c/9e323f856cf4963120e0e3892a84ef8bd764a0e4 - Patch
References () https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5 - () https://git.kernel.org/stable/c/d738f3215bb4f88911ff4579780a44960c8e0ca5 - Patch
CPE cpe:2.3:o:linux:linux_kernel:6.13:rc5:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc6:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:6.13:rc3:*:*:*:*:*:*
First Time Linux linux Kernel
Linux
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: virtio-blk: no mantener la cola congelada durante la suspensión del sistema. Commit 4ce6e2db00de ("virtio-blk: Asegúrese de que no haya solicitudes en virtqueues antes de eliminar vqs") reemplaza la inactividad de la cola con el congelamiento de la cola en las devoluciones de llamadas de PM de virtio-blk. Y la motivación es drenar las E/S en vuelo antes de suspender. El congelamiento de la cola de la capa de bloque parece muy útil, pero también es fácil causar un bloqueo, como, por ejemplo, cualquier intento de llamar a bio_queue_enter() puede encontrarse con un bloqueo si la cola está congelada en el contexto actual. Hay todo tipo de ->suspend() llamados en el contexto de suspensión, por lo que mantener la cola congelada en todo el contexto de suspensión no es una buena idea. Y Marek informó una advertencia de lockdep[1] causada por la cola congelada de virtio-blk en virtblk_freeze(). [1] https://lore.kernel.org/linux-block/ca16370e-d646-4eee-b9cc-87277c89c43c@samsung.com/ Dado que la motivación es drenar las E/S en vuelo, se puede hacer llamando a congelar y descongelar, mientras tanto restaurar el comportamiento anterior manteniendo la cola inactiva durante la suspensión.
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5

21 Jan 2025, 13:15

Type Values Removed Values Added
New CVE
Information

Published : 2025-01-21 13:15

Updated : 2025-02-28 18:59

NVD link : CVE-2024-57946

Mitre link : CVE-2024-57946

CVE.ORG link : CVE-2024-57946

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-667

Improper Locking