| 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-2024-42146: drm/xe: Add outer runtime_pm protection to xe_live_ktest@xe_dma_buf |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/xe: Add outer runtime_pm protection to xe_live_ktest@xe_dma_buf |
| |
| Any kunit doing any memory access should get their own runtime_pm |
| outer references since they don't use the standard driver API |
| entries. In special this dma_buf from the same driver. |
| |
| Found by pre-merge CI on adding WARN calls for unprotected |
| inner callers: |
| |
| <6> [318.639739] # xe_dma_buf_kunit: running xe_test_dmabuf_import_same_driver |
| <4> [318.639957] ------------[ cut here ]------------ |
| <4> [318.639967] xe 0000:4d:00.0: Missing outer runtime PM protection |
| <4> [318.640049] WARNING: CPU: 117 PID: 3832 at drivers/gpu/drm/xe/xe_pm.c:533 xe_pm_runtime_get_noresume+0x48/0x60 [xe] |
| |
| The Linux kernel CVE team has assigned CVE-2024-42146 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.9.9 with commit 0888d15ea45ba8ef4508edd1123ea5ad95b58994 |
| Issue introduced in 6.8 with commit dd08ebf6c3525a7ea2186e636df064ea47281987 and fixed in 6.10 with commit f9116f658a6217b101e3b4e89f845775b6fb05d9 |
| |
| 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-2024-42146 |
| 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/xe/tests/xe_dma_buf.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/0888d15ea45ba8ef4508edd1123ea5ad95b58994 |
| https://git.kernel.org/stable/c/f9116f658a6217b101e3b4e89f845775b6fb05d9 |
