CVE-2024-44955 - AMD Display Null Pointer Dereference Vulnerability

CVE ID : CVE-2024-44955
Published : Sept. 4, 2024, 7:15 p.m. | 24 minutes ago
Description : 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.
Severity: 0.0 | NA
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