CVE-2022-49490

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/

CVSS v3 5.5 MEDIUM

5.5^/10

CVSS v3 : MEDIUM

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/04bef5f1ba8ea6d7c1c8f5f65e0395c62db59cb8	Patch
https://git.kernel.org/stable/c/19964dfb39bda4d7716a71009488f0668ecbcf52	Patch
https://git.kernel.org/stable/c/33dc5aac46e0fad8f5eb193e5906ed0eb6b66ceb	Patch
https://git.kernel.org/stable/c/49dc28b4b2e28ef7564e355c91487996c1cbebd7	Patch
https://git.kernel.org/stable/c/776f5c58bfe16cf322d71eeed3c5dda1eeac7e6b	Patch
https://git.kernel.org/stable/c/b2aa2c4efe93e2580d6a8774b04fe2b99756a322	Patch
https://git.kernel.org/stable/c/d59be579fa932c46b908f37509f319cbd4ca9a68	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::::::::

History

No history.

Information

Published : 2025-02-26 07:01

Updated : 2025-10-22 17:20

NVD link : CVE-2022-49490

Mitre link : CVE-2022-49490

CVE.ORG link : CVE-2022-49490

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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Because of this, there is a possibility of\nmdp5_pipe_release hitting a NULL dereference error.\n\nTo avoid this, let's have mdp5_pipe_release check if\nmdp5_get_global_state returns an error and propogate that error.\n\nChanges since v1:\n- Separated declaration and initialization of *new_state to avoid\n compiler warning\n- Fixed some spelling mistakes in commit message\n\nChanges since v2:\n- Return 0 in case where hwpipe is NULL as this is considered normal\n behavior\n- Added 2nd patch in series to fix a similar NULL dereference issue in\n mdp5_mixer_release\n\nPatchwork: https://patchwork.freedesktop.org/patch/485179/"}, {"lang": "es", "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/msm/mdp5: Devuelve un c\u00f3digo de error en mdp5_pipe_release cuando se detecta un bloqueo mdp5_get_global_state corre el riesgo de alcanzar un -EDEADLK al adquirir el bloqueo modeset, pero actualmente mdp5_pipe_release no verifica si se devuelve un error. Debido a esto, existe la posibilidad de que mdp5_pipe_release alcance un error de desreferencia NULL. Para evitar esto, hagamos que mdp5_pipe_release verifique si mdp5_get_global_state devuelve un error y propague ese error. 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