Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe
This commit addresses a null pointer dereference issue in dcn20_program_pipe(). Previously, commit 8e4ed3cf1642 ("drm/amd/display: Add null check for pipe_ctx->plane_state in dcn20_program_pipe") partially fixed the null pointer dereference issue. However, in dcn20_update_dchubp_dpp(), the variable pipe_ctx is passed in, and plane_state is accessed again through pipe_ctx. Multiple if statements directly call attributes of plane_state, leading to potential null pointer dereference issues. This patch adds necessary null checks to ensure stability.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 21c613e1c6ae45bb29ebc156d22060f034cc5665, < 82f7058ce05c1fad8573950c50bb5befafe7e787; >= 68f75e6f08aad66069a629db8d7840919156c761, < 0335fb698ab0415d87650bc7a0f465c563ddec7d; >= 65a6fee22d5cfa645cb05489892dc9cd3d142fc2, < 6b4ee2560d4d8de2688da68cd9581177035e0876; >= 8e4ed3cf1642df0c4456443d865cff61a9598aa8, < 3609259326171cd5b98462636580fb2ae5c87d40; >= 8e4ed3cf1642df0c4456443d865cff61a9598aa8, < 6a057072ddd127255350357dd880903e8fa23f36; >= 6.6.64, < 6.6.160; >= 6.11.3, < 6.11.11 |
| Linux | Linux | 6.12 |
References
- https://git.kernel.org/stable/c/0335fb698ab0415d87650bc7a0f465c563ddec7d
- https://git.kernel.org/stable/c/3609259326171cd5b98462636580fb2ae5c87d40Patch
- https://git.kernel.org/stable/c/6a057072ddd127255350357dd880903e8fa23f36Patch
- https://git.kernel.org/stable/c/6b4ee2560d4d8de2688da68cd9581177035e0876Patch
- https://git.kernel.org/stable/c/82f7058ce05c1fad8573950c50bb5befafe7e787
Timeline
- Published
- Dec 27, 2024
- Last modified
- Oct 30, 2026
- NVD status
- Modified