CVE-2024-49943: fallo de gravedad alta en Linux
drm/xe/guc_submit: add missing locking in wedged_fini
Publicada el · Actualizada el
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.8epss 0.2%
probabilidad de explotación
0.2%top 95% de las CVE
explotación observada
noninguna fuente lo reporta
In the Linux kernel, the following vulnerability has been resolved:
drm/xe/guc_submit: add missing locking in wedged_fini
Any non-wedged queue can have a zero refcount here and can be running
concurrently with an async queue destroy, therefore dereferencing the
queue ptr to check wedge status after the lookup can trigger UAF if
queue is not wedged. Fix this by keeping the submission_state lock held
around the check to postpone the free and make the check safe, before
dropping again around the put() to avoid the deadlock.
(cherry picked from commit d28af0b6b9580b9f90c265a7da0315b0ad20bbfd)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Productos afectados
Linux · LinuxCVEs relacionadas — Linux
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