| 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-2024-43886: drm/amd/display: Add null check in resource_log_pipe_topology_update |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Add null check in resource_log_pipe_topology_update |
| |
| [WHY] |
| When switching from "Extend" to "Second Display Only" we sometimes |
| call resource_get_otg_master_for_stream on a stream for the eDP, |
| which is disconnected. This leads to a null pointer dereference. |
| |
| [HOW] |
| Added a null check in dc_resource.c/resource_log_pipe_topology_update. |
| |
| The Linux kernel CVE team has assigned CVE-2024-43886 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.10.5 with commit c36e922a36bdf69765c340a0857ca74092003bee |
| Fixed in 6.11 with commit 899d92fd26fe780aad711322aa671f68058207a6 |
| |
| 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-2024-43886 |
| 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/core/dc_resource.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/c36e922a36bdf69765c340a0857ca74092003bee |
| https://git.kernel.org/stable/c/899d92fd26fe780aad711322aa671f68058207a6 |
