CVE-2024-26729

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix potential null pointer dereference in dc_dmub_srv Fixes potential null pointer dereference warnings in the dc_dmub_srv_cmd_list_queue_execute() and dc_dmub_srv_is_hw_pwr_up() functions. In both functions, the 'dc_dmub_srv' variable was being dereferenced before it was checked for null. This could lead to a null pointer dereference if 'dc_dmub_srv' is null. The fix is to check if 'dc_dmub_srv' is null before dereferencing it. Thus moving the null checks for 'dc_dmub_srv' to the beginning of the functions to ensure that 'dc_dmub_srv' is not null when it is dereferenced. Found by smatch & thus fixing the below: drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:133 dc_dmub_srv_cmd_list_queue_execute() warn: variable dereferenced before check 'dc_dmub_srv' (see line 128) drivers/gpu/drm/amd/amdgpu/../display/dc/dc_dmub_srv.c:1167 dc_dmub_srv_is_hw_pwr_up() warn: variable dereferenced before check 'dc_dmub_srv' (see line 1164)

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/351080ba3414c96afff0f1338b4aeb2983195b80	Patch
https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907	Patch
https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80	Patch
https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907	Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:linux:linux_kernel::::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc1::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc2::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc3::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc4::::::
	cpe:2.3:o:linux:linux_kernel:6.8:rc5::::::

History

No history.

Information

Published : 2024-04-03 17:15

Updated : 2025-01-07 21:14

NVD link : CVE-2024-26729

Mitre link : CVE-2024-26729

CVE.ORG link : CVE-2024-26729

JSON object : View

Products Affected

linux

linux_kernel

CWE

CWE-476

NULL Pointer Dereference

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