cve-2024-26729
Vulnerability from cvelistv5
Published
2024-04-03 17:00
Modified
2024-12-19 08:46
Severity ?
Summary
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)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/351080ba3414c96afff0f1338b4aeb2983195b80Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d2b48f340d9e4a8fbeb1cdc84cd8da6ad143a907Patch
Impacted products
Vendor Product Version
Linux Linux Version: 028bac5834495f4f4036bf8b3206fcdafe99a393
Version: 028bac5834495f4f4036bf8b3206fcdafe99a393
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   Linux Linux Version: 6.7
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