| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2025-37965: drm/amd/display: Fix invalid context error in dml helper |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Fix invalid context error in dml helper |
| |
| [Why] |
| "BUG: sleeping function called from invalid context" error. |
| after: |
| "drm/amd/display: Protect FPU in dml2_validate()/dml21_validate()" |
| |
| The populate_dml_plane_cfg_from_plane_state() uses the GFP_KERNEL flag |
| for memory allocation, which shouldn't be used in atomic contexts. |
| |
| The allocation is needed only for using another helper function |
| get_scaler_data_for_plane(). |
| |
| [How] |
| Modify helpers to pass a pointer to scaler_data within existing context, |
| eliminating the need for dynamic memory allocation/deallocation |
| and copying. |
| |
| (cherry picked from commit bd3e84bc98f81b44f2c43936bdadc3241d654259) |
| |
| The Linux kernel CVE team has assigned CVE-2025-37965 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.12.25 with commit 74d6fba60f05ca6b298702233b6e6cc7629eeb5a and fixed in 6.12.29 with commit d8c4afe78385cd355e4d80299d785379d6e874df |
| Issue introduced in 6.14.4 with commit 7b80dcf343d45088931d16a6c9ba2fd975138a0b and fixed in 6.14.7 with commit b371f8f6d89ec8dfea796e00a44a57c44fc8fcc0 |
| |
| 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-2025-37965 |
| 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/dml2/dml2_translation_helper.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/d8c4afe78385cd355e4d80299d785379d6e874df |
| https://git.kernel.org/stable/c/b371f8f6d89ec8dfea796e00a44a57c44fc8fcc0 |
| https://git.kernel.org/stable/c/9984db63742099ee3f3cff35cf71306d10e64356 |
