| 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-2024-27411: drm/nouveau: keep DMA buffers required for suspend/resume |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/nouveau: keep DMA buffers required for suspend/resume |
| |
| Nouveau deallocates a few buffers post GPU init which are required for GPU suspend/resume to function correctly. |
| This is likely not as big an issue on systems where the NVGPU is the only GPU, but on multi-GPU set ups it leads to a regression where the kernel module errors and results in a system-wide rendering freeze. |
| |
| This commit addresses that regression by moving the two buffers required for suspend and resume to be deallocated at driver unload instead of post init. |
| |
| The Linux kernel CVE team has assigned CVE-2024-27411 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.7.6 with commit 6190d4c08897d748dd25f0b78267a90aa1694e15 and fixed in 6.7.9 with commit be00e15b240ed71fc30c0576af7ab670c8271661 |
| |
| 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-2024-27411 |
| 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/nouveau/nvkm/subdev/gsp/r535.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/be00e15b240ed71fc30c0576af7ab670c8271661 |
| https://git.kernel.org/stable/c/f6ecfdad359a01c7fd8a3bcfde3ef0acdf107e6e |
