Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a Null pointer dereference vulnerability [Why] A null pointer dereference vulnerability exists in the AMD display driver's (DC module) cleanup function dc_destruct(). When display control context (dc->ctx) construction fails (due to memory allocation failure), this pointer remains NULL. During subsequent error handling when dc_destruct() is called, there's no NULL check before dereferencing the perf_trace member (dc->ctx->perf_trace), causing a kernel null pointer dereference crash. [How] Check if dc->ctx is non-NULL before dereferencing. (Updated commit text and removed unnecessary error message) (cherry picked from commit 9dd8e2ba268c636c240a918e0a31e6feaee19404)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 0d9f4f202de1522aadc7a827aba0ae92b3d70937affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 0961673cc5f0055957aa46f25eb4ef6c07e00165affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 4ade995b9b25b3c6e8dc42c27070340f1358d8c8affected4562236b3bc0a28aeb6ee93b2d8a849a4c4e1c7c to < 1bcf63a44381691d6192872801f830ce3250e367affected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected6.6.160 to ≤ 6.6.*unaffected6.12.44 to ≤ 6.12.*unaffected6.16.4 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected