CVE-2024-49917

Published: October 23, 2024Last modified: October 23, 2024

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for clk_mgr and clk_mgr->funcs in dcn30_init_hw This commit addresses a potential null pointer dereference issue in the `dcn30_init_hw` function. The issue could occur when `dc->clk_mgr` or `dc->clk_mgr->funcs` is null. The fix adds a check to ensure `dc->clk_mgr` and `dc->clk_mgr->funcs` is not null before accessing its functions. This prevents a potential null pointer dereference. Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/hwss/dcn30/dcn30_hwseq.c:789 dcn30_init_hw() error: we previously assumed 'dc->clk_mgr' could be null (see line 628)

Severity score breakdown

Status

References

• https://git.kernel.org/stable/c/205e3b96cc9aa9211fd2c849a16245cf236b2d36
• https://git.kernel.org/stable/c/23cb6139543580dc36743586ca86fbb3f7ab2c9d
• https://git.kernel.org/stable/c/5443c83eb8fd2f88c71ced38848fbf744d6206a2
• https://git.kernel.org/stable/c/56c326577971adc3a230f29dfd3aa3abdd505f5d
• https://git.kernel.org/stable/c/cba7fec864172dadd953daefdd26e01742b71a6a