CVE-2022-49490

drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected

MEDIUM

5.5

CVSS Score

Published: February 26, 2025 at 02:13 AM UTC

Updated: June 17, 2026 at 05:18 AM UTC

1 product affected across 1 vendorLinux Kernel

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Severity

MEDIUM5.5

Exploit prediction

EPSS 0.3%

Description

In the Linux kernel, the following vulnerability has been resolved: drm/msm/mdp5: Return error code in mdp5_pipe_release when deadlock is detected mdp5_get_global_state runs the risk of hitting a -EDEADLK when acquiring the modeset lock, but currently mdp5_pipe_release doesn't check for if an error is returned. Because of this, there is a possibility of mdp5_pipe_release hitting a NULL dereference error. To avoid this, let's have mdp5_pipe_release check if mdp5_get_global_state returns an error and propogate that error. Changes since v1: - Separated declaration and initialization of *new_state to avoid compiler warning - Fixed some spelling mistakes in commit message Changes since v2: - Return 0 in case where hwpipe is NULL as this is considered normal behavior - Added 2nd patch in series to fix a similar NULL dereference issue in mdp5_mixer_release Patchwork: https://patchwork.freedesktop.org/patch/485179/

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Linux Kernel · Linux

95%

4.18 ≤ v < 4.19.2474.18 ≤ v < 5.10.1214.18 ≤ v < 5.15.464.18 ≤ v < 5.17.144.18 ≤ v < 5.18.34.18 ≤ v < 5.194.18 ≤ v < 5.4.1984.20 ≤ v < 5.4.1985.11 ≤ v < 5.15.465.16 ≤ v < 5.17.145.18 ≤ v < 5.18.35.5 ≤ v < 5.10.1214.187907a0d77cb461f58045763c205a5830be72e97c

Vendor states this is fixed in 19964dfb39bda4d7716a71009488f0668ecbcf52 (fixed)

Vendor states this is fixed in 33dc5aac46e0fad8f5eb193e5906ed0eb6b66ceb (fixed)

Vendor states this is fixed in 49dc28b4b2e28ef7564e355c91487996c1cbebd7 (fixed)

Vendor states this is fixed in 4bef5f1ba8ea6d7c1c8f5f65e395c62db59cb8 (fixed)

Vendor states this is fixed in 776f5c58bfe16cf322d71eeed3c5dda1eeac7e6b (fixed)

Vendor states this is fixed in b2aa2c4efe93e2580d6a8774b04fe2b99756a322 (fixed)

Vendor states this is fixed in d59be579fa932c46b908f37509f319cbd4ca9a68 (fixed)

Vendor states this is fixed in 4.18 (unaffected)

Vendor states this is fixed in 4.19.247 (unaffected)

Vendor states this is fixed in 5.10.121 (unaffected)

Vendor states this is fixed in 5.15.46 (unaffected)

Vendor states this is fixed in 5.17.14 (unaffected)