| From bippy-7c5fe7eed585 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-2025-21987: drm/amdgpu: init return value in amdgpu_ttm_clear_buffer |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amdgpu: init return value in amdgpu_ttm_clear_buffer |
| |
| Otherwise an uninitialized value can be returned if |
| amdgpu_res_cleared returns true for all regions. |
| |
| Possibly closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3812 |
| |
| (cherry picked from commit 7c62aacc3b452f73a1284198c81551035fac6d71) |
| |
| The Linux kernel CVE team has assigned CVE-2025-21987 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.10 with commit a68c7eaa7a8ffdec9287ba1561a668d674c20a13 and fixed in 6.12.18 with commit d2c9625b0ade41f9917875d88173a0cc802b95fc |
| Issue introduced in 6.10 with commit a68c7eaa7a8ffdec9287ba1561a668d674c20a13 and fixed in 6.13.6 with commit 5bd98c2df4a0f2e2dcbdf563feb8d348406377b5 |
| Issue introduced in 6.10 with commit a68c7eaa7a8ffdec9287ba1561a668d674c20a13 and fixed in 6.14 with commit d3c7059b6a8600fc62cd863f1ea203b8675e63e1 |
| |
| 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-2025-21987 |
| 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/amdgpu/amdgpu_ttm.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/d2c9625b0ade41f9917875d88173a0cc802b95fc |
| https://git.kernel.org/stable/c/5bd98c2df4a0f2e2dcbdf563feb8d348406377b5 |
| https://git.kernel.org/stable/c/d3c7059b6a8600fc62cd863f1ea203b8675e63e1 |
