In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: fix a Null...
🔗 CVE IDs covered (1)
📋 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)
🔗 References (7)
- https://nvd.nist.gov/vuln/detail/CVE-2025-39705
- https://git.kernel.org/stable/c/0961673cc5f0055957aa46f25eb4ef6c07e00165
- https://git.kernel.org/stable/c/1bcf63a44381691d6192872801f830ce3250e367
- https://git.kernel.org/stable/c/4ade995b9b25b3c6e8dc42c27070340f1358d8c8
- https://git.kernel.org/stable/c/0d9f4f202de1522aadc7a827aba0ae92b3d70937
- https://git.kernel.org/stable/c/dd9699368f37aca4f216857847a46a8a2c289f94
- https://github.com/advisories/GHSA-jw27-2859-7h38