CVE-2023-52586

drm/msm/dpu: Add mutex lock in control vblank irq

State: Published
Severity: 7.8 High
Published: Mar 6, 2024
Updated: Oct 30, 2026
Reserved: Mar 2, 2024

Description

In the Linux kernel, the following vulnerability has been resolved:

drm/msm/dpu: Add mutex lock in control vblank irq

Add a mutex lock to control vblank irq to synchronize vblank enable/disable operations happening from different threads to prevent race conditions while registering/unregistering the vblank irq callback.

v4: -Removed vblank_ctl_lock from dpu_encoder_virt, so it is only a parameter of dpu_encoder_phys. -Switch from atomic refcnt to a simple int counter as mutex has now been added v3: Mistakenly did not change wording in last version. It is done now. v2: Slightly changed wording of commit message

Patchwork: https://patchwork.freedesktop.org/patch/571854/

Scores

CVSS	Score	Vector	Source
3.1	7.8 High	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H	Linux

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef to before 763ca8d84f34d1db00d5750f77e6001765916d44Affected 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef to before f6dd625053726ea2a209282bee97218f2ec04149Affected 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef to before 14f109bf74dd67e1d0469fed859c8e506b0df53fAffected 25fdd5933e4c0f5fe2ea5cd59994f8ac5fbe90ef to before 45284ff733e4caf6c118aae5131eb7e7cf3eea5aAffected
LinuxLinux	4.19Affected before 4.19Not affected 6.1.191 through 6.1.Not affected 6.6.160 through 6.6.Not affected 6.7.4 through 6.7.*Not affected 6.8 and laterNot affected

References

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