| 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-2025-21819: Revert "drm/amd/display: Use HW lock mgr for PSR1" |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| Revert "drm/amd/display: Use HW lock mgr for PSR1" |
| |
| This reverts commit |
| a2b5a9956269 ("drm/amd/display: Use HW lock mgr for PSR1") |
| |
| Because it may cause system hang while connect with two edp panel. |
| |
| The Linux kernel CVE team has assigned CVE-2025-21819 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.1.128 with commit b7d2461858ac75c9d6bc4ab8af1a738d0814b716 and fixed in 6.1.129 with commit 915697c2e69ac8d14dad498e6d6f43dbb7de3787 |
| Issue introduced in 6.6.75 with commit 758abba3dd413dc5de2016f8588403294263a30a and fixed in 6.6.78 with commit dcc3f2c06d80da39eee742b51ddf0781affb260c |
| Issue introduced in 6.12.12 with commit 4b46fc30b37e457d25cf3908c0c4dc3fbedd2044 and fixed in 6.12.14 with commit 95c75578c420110c43791295985abb961d6dc033 |
| Issue introduced in 6.13 with commit b5c764d6ed556c4e81fbe3fd976da77ec450c08e and fixed in 6.13.3 with commit a978864653e45d2671f99b09afcc1110e45d3dd9 |
| Issue introduced in 6.13 with commit b5c764d6ed556c4e81fbe3fd976da77ec450c08e and fixed in 6.14 with commit f245b400a223a71d6d5f4c72a2cb9b573a7fc2b6 |
| |
| 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-2025-21819 |
| 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/dce/dmub_hw_lock_mgr.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/915697c2e69ac8d14dad498e6d6f43dbb7de3787 |
| https://git.kernel.org/stable/c/dcc3f2c06d80da39eee742b51ddf0781affb260c |
| https://git.kernel.org/stable/c/95c75578c420110c43791295985abb961d6dc033 |
| https://git.kernel.org/stable/c/a978864653e45d2671f99b09afcc1110e45d3dd9 |
| https://git.kernel.org/stable/c/f245b400a223a71d6d5f4c72a2cb9b573a7fc2b6 |
