| 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-2025-21968: drm/amd/display: Fix slab-use-after-free on hdcp_work |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Fix slab-use-after-free on hdcp_work |
| |
| [Why] |
| A slab-use-after-free is reported when HDCP is destroyed but the |
| property_validate_dwork queue is still running. |
| |
| [How] |
| Cancel the delayed work when destroying workqueue. |
| |
| (cherry picked from commit 725a04ba5a95e89c89633d4322430cfbca7ce128) |
| |
| The Linux kernel CVE team has assigned CVE-2025-21968 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 5.10.236 with commit 06acfdef370ae018dad9592369e2d2fd9a40c09e |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 5.15.180 with commit 1397715b011bcdc6ad91b17df7acaee301e89db5 |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 6.1.132 with commit 4964dbc4191ab436877a5e3ecd9c67a4e50b7c36 |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 6.6.84 with commit 378b361e2e30e9729f9a7676f7926868d14f4326 |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 6.12.20 with commit bac7b8b1a3f1a86eeec85835af106cbdc2b9d9f7 |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 6.13.8 with commit 93d701064e56788663d7c5918fbe5e060d5df587 |
| Issue introduced in 5.5 with commit da3fd7ac0bcf372cc57117bdfcd725cca7ef975a and fixed in 6.14 with commit e65e7bea220c3ce8c4c793b4ba35557f4994ab2b |
| |
| 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-2025-21968 |
| 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/amdgpu_dm/amdgpu_dm_hdcp.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/06acfdef370ae018dad9592369e2d2fd9a40c09e |
| https://git.kernel.org/stable/c/1397715b011bcdc6ad91b17df7acaee301e89db5 |
| https://git.kernel.org/stable/c/4964dbc4191ab436877a5e3ecd9c67a4e50b7c36 |
| https://git.kernel.org/stable/c/378b361e2e30e9729f9a7676f7926868d14f4326 |
| https://git.kernel.org/stable/c/bac7b8b1a3f1a86eeec85835af106cbdc2b9d9f7 |
| https://git.kernel.org/stable/c/93d701064e56788663d7c5918fbe5e060d5df587 |
| https://git.kernel.org/stable/c/e65e7bea220c3ce8c4c793b4ba35557f4994ab2b |
