| 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-2024-49910: drm/amd/display: Add NULL check for function pointer in dcn401_set_output_transfer_func |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Add NULL check for function pointer in dcn401_set_output_transfer_func |
| |
| This commit adds a null check for the set_output_gamma function pointer |
| in the dcn401_set_output_transfer_func function. Previously, |
| set_output_gamma was being checked for null, but then it was being |
| dereferenced without any null check. This could lead to a null pointer |
| dereference if set_output_gamma is null. |
| |
| To fix this, we now ensure that set_output_gamma is not null before |
| dereferencing it. We do this by adding a null check for set_output_gamma |
| before the call to set_output_gamma. |
| |
| The Linux kernel CVE team has assigned CVE-2024-49910 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.11.3 with commit d8ee900b92b6526cf84275b49a473155ad75c70e |
| Fixed in 6.12 with commit dd340acd42c24a3f28dd22fae6bf38662334264c |
| |
| 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-2024-49910 |
| 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/hwss/dcn401/dcn401_hwseq.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/d8ee900b92b6526cf84275b49a473155ad75c70e |
| https://git.kernel.org/stable/c/dd340acd42c24a3f28dd22fae6bf38662334264c |
