| 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-2024-49907: drm/amd/display: Check null pointers before using dc->clk_mgr |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Check null pointers before using dc->clk_mgr |
| |
| [WHY & HOW] |
| dc->clk_mgr is null checked previously in the same function, indicating |
| it might be null. |
| |
| Passing "dc" to "dc->hwss.apply_idle_power_optimizations", which |
| dereferences null "dc->clk_mgr". (The function pointer resolves to |
| "dcn35_apply_idle_power_optimizations".) |
| |
| This fixes 1 FORWARD_NULL issue reported by Coverity. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49907 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 5.10.227 with commit 8d54001f8dccd56146973f23f3ab2ba037a21251 |
| Fixed in 5.15.168 with commit a545a9403e04c6e17fdc04a26a61d9feebbba106 |
| Fixed in 6.1.113 with commit a2773e0a4b79e7a6463abdffaf8cc4f24428ba18 |
| Fixed in 6.6.55 with commit 9641bc4adf8446034e490ed543ae7e9833cfbdf5 |
| Fixed in 6.10.14 with commit 3f7e533c10db3d0158709a99e2129ff63add6bcd |
| Fixed in 6.11.3 with commit 5ba3fbf75b243b2863a8be9e7c393e003d3b88f3 |
| Fixed in 6.12 with commit 95d9e0803e51d5a24276b7643b244c7477daf463 |
| |
| 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-2024-49907 |
| 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.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/8d54001f8dccd56146973f23f3ab2ba037a21251 |
| https://git.kernel.org/stable/c/a545a9403e04c6e17fdc04a26a61d9feebbba106 |
| https://git.kernel.org/stable/c/a2773e0a4b79e7a6463abdffaf8cc4f24428ba18 |
| https://git.kernel.org/stable/c/9641bc4adf8446034e490ed543ae7e9833cfbdf5 |
| https://git.kernel.org/stable/c/3f7e533c10db3d0158709a99e2129ff63add6bcd |
| https://git.kernel.org/stable/c/5ba3fbf75b243b2863a8be9e7c393e003d3b88f3 |
| https://git.kernel.org/stable/c/95d9e0803e51d5a24276b7643b244c7477daf463 |
