| From bippy-5f407fcff5a0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-53201: drm/amd/display: Fix null check for pipe_ctx->plane_state in dcn20_program_pipe |
| |
| 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. |
| |
| The Linux kernel CVE team has assigned CVE-2024-53201 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.11.3 with commit 65a6fee22d5cfa645cb05489892dc9cd3d142fc2 and fixed in 6.11.11 with commit 6b4ee2560d4d8de2688da68cd9581177035e0876 |
| Issue introduced in 6.12 with commit 8e4ed3cf1642df0c4456443d865cff61a9598aa8 and fixed in 6.12.2 with commit 3609259326171cd5b98462636580fb2ae5c87d40 |
| Issue introduced in 6.12 with commit 8e4ed3cf1642df0c4456443d865cff61a9598aa8 and fixed in 6.13 with commit 6a057072ddd127255350357dd880903e8fa23f36 |
| Issue introduced in 6.6.64 with commit 68f75e6f08aad66069a629db8d7840919156c761 |
| |
| Please see https://www.kernel.org for a full list of currently supported |
| kernel versions by the kernel community. |
| |
| Unaffected versions might change over time as fixes are backported to |
| older supported kernel versions. The official CVE entry at |
| https://cve.org/CVERecord/?id=CVE-2024-53201 |
| will be updated if fixes are backported, please check that for the most |
| up to date information about this issue. |
| |
| |
| Affected files |
| ============== |
| |
| The file(s) affected by this issue are: |
| drivers/gpu/drm/amd/display/dc/hwss/dcn20/dcn20_hwseq.c |
| |
| |
| Mitigation |
| ========== |
| |
| The Linux kernel CVE team recommends that you update to the latest |
| stable kernel version for this, and many other bugfixes. Individual |
| changes are never tested alone, but rather are part of a larger kernel |
| release. Cherry-picking individual commits is not recommended or |
| supported by the Linux kernel community at all. If however, updating to |
| the latest release is impossible, the individual changes to resolve this |
| issue can be found at these commits: |
| https://git.kernel.org/stable/c/6b4ee2560d4d8de2688da68cd9581177035e0876 |
| https://git.kernel.org/stable/c/3609259326171cd5b98462636580fb2ae5c87d40 |
| https://git.kernel.org/stable/c/6a057072ddd127255350357dd880903e8fa23f36 |
