| 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-2024-49912: drm/amd/display: Handle null 'stream_status' in 'planes_changed_for_existing_stream' |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Handle null 'stream_status' in 'planes_changed_for_existing_stream' |
| |
| This commit adds a null check for 'stream_status' in the function |
| 'planes_changed_for_existing_stream'. Previously, the code assumed |
| 'stream_status' could be null, but did not handle the case where it was |
| actually null. This could lead to a null pointer dereference. |
| |
| Reported by smatch: |
| drivers/gpu/drm/amd/amdgpu/../display/dc/core/dc_resource.c:3784 planes_changed_for_existing_stream() error: we previously assumed 'stream_status' could be null (see line 3774) |
| |
| The Linux kernel CVE team has assigned CVE-2024-49912 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.1.113 with commit c4b699b93496c423b0e5b584d4eb4ab849313bcf |
| Fixed in 6.6.55 with commit 4778982c73d6c9f3fdbdbc6b6c8aa18df98251af |
| Fixed in 6.10.14 with commit ec6c32b58e6c4e87760e797c525e99a460c82bcb |
| Fixed in 6.11.3 with commit 0ffd9fb03bbc99ed1eb5dc989d5c7da2faac0659 |
| Fixed in 6.12 with commit 8141f21b941710ecebe49220b69822cab3abd23d |
| |
| 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-2024-49912 |
| 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/core/dc_resource.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/c4b699b93496c423b0e5b584d4eb4ab849313bcf |
| https://git.kernel.org/stable/c/4778982c73d6c9f3fdbdbc6b6c8aa18df98251af |
| https://git.kernel.org/stable/c/ec6c32b58e6c4e87760e797c525e99a460c82bcb |
| https://git.kernel.org/stable/c/0ffd9fb03bbc99ed1eb5dc989d5c7da2faac0659 |
| https://git.kernel.org/stable/c/8141f21b941710ecebe49220b69822cab3abd23d |
