CVE-2024-44955

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2024-44955
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Don't refer to dc_sink in is_dsc_need_re_compute [Why] When unplug one of monitors connected after mst hub, encounter null pointer dereference. It's due to dc_sink get released immediately in early_unregister() or detect_ctx(). When commit new state which directly referring to info stored in dc_sink will cause null pointer dereference. [how] Remove redundant checking condition. Relevant condition should already be covered by checking if dsc_aux is null or not. Also reset dsc_aux to NULL when the connector is disconnected.

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/39b217193729aa45eded8de24d9245468a0c0263 Patch
https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911
https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4 Patch
Configurations

Configuration 1 (hide)

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
History

09 Dec 2024, 13:10

Type Values Removed Values Added
References
  • () https://git.kernel.org/stable/c/c7e65cab54a89f4df54110f0b44c4ade93d1a911 -

10 Oct 2024, 17:57

Type Values Removed Values Added
CPE cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : unknown
v3 : 5.5
References () https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263 - () https://git.kernel.org/stable/c/39b217193729aa45eded8de24d9245468a0c0263 - Patch
References () https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4 - () https://git.kernel.org/stable/c/fcf6a49d79923a234844b8efe830a61f3f0584e4 - Patch
First Time Linux linux Kernel
Linux
CWE CWE-476

05 Sep 2024, 12:53

Type Values Removed Values Added
Summary
  • (es) En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: drm/amd/display: No hacer referencia a dc_sink en is_dsc_need_re_compute [Por qué] Cuando se desconecta uno de los monitores conectados después del concentrador mst, se produce una desreferencia de puntero nulo. Esto se debe a que dc_sink se libera inmediatamente en early_unregister() o detect_ctx(). Cuando se confirma un nuevo estado que hace referencia directa a la información almacenada en dc_sink, se producirá una desreferencia de puntero nulo. [Cómo] Eliminar la condición de comprobación redundante. La condición relevante ya debería estar cubierta comprobando si dsc_aux es nulo o no. También se restablece dsc_aux a NULL cuando se desconecta el conector.

04 Sep 2024, 19:15

Type Values Removed Values Added
New CVE
Information

Published : 2024-09-04 19:15

Updated : 2024-12-09 13:10

NVD link : CVE-2024-44955

Mitre link : CVE-2024-44955

CVE.ORG link : CVE-2024-44955

JSON object : View

Products Affected

linux

  • linux_kernel
CWE
CWE-476

NULL Pointer Dereference