CVE-2024-49910
MediumCVSS 5.5Summary
In the Linux kernel, a vulnerability was resolved in drm/amd/display: a NULL check was added for the function pointer in dcn401_set_output_transfer_func. Previously, set_output_gamma was checked for null but then dereferenced without a null check, potentially leading to a null pointer dereference. The fix ensures set_output_gamma is not null before calling it.
Risk Assessment
A kernel crash (null pointer dereference) may occur during display operations, leading to denial of service or system instability. This affects systems with AMD GPUs using this driver.
Recommendation
Update the Linux kernel to a version containing the fix. Monitor systems for crashes related to the amdgpu driver.
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Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add NULL check for function pointer in dcn401_set_output_transfer_func This commit adds a null check for the set_output_gamma function pointer in the dcn401_set_output_transfer_func function. Previously, set_output_gamma was being checked for null, but then it was being dereferenced without any null check. This could lead to a null pointer dereference if set_output_gamma is null. To fix this, we now ensure that set_output_gamma is not null before dereferencing it. We do this by adding a null check for set_output_gamma before the call to set_output_gamma.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS