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Message-ID: <2025022710-CVE-2025-21819-5549@gregkh> Date: Thu, 27 Feb 2025 12:03:16 -0800 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-cve-announce@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.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 =========================== Fixed in 6.1.129 with commit 915697c2e69ac8d14dad498e6d6f43dbb7de3787 Fixed in 6.6.78 with commit dcc3f2c06d80da39eee742b51ddf0781affb260c Fixed in 6.12.14 with commit 95c75578c420110c43791295985abb961d6dc033 Fixed in 6.13.3 with commit a978864653e45d2671f99b09afcc1110e45d3dd9 Fixed in 6.14-rc2 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
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