| From bippy-1.2.0 Mon Sep 17 00:00:00 2001 |
| From: Greg Kroah-Hartman <gregkh@kernel.org> |
| To: <linux-cve-announce@vger.kernel.org> |
| Reply-to: <cve@kernel.org>, <linux-kernel@vger.kernel.org> |
| Subject: CVE-2024-49909: drm/amd/display: Add NULL check for function pointer in dcn32_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 dcn32_set_output_transfer_func |
| |
| This commit adds a null check for the set_output_gamma function pointer |
| in the dcn32_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-2024-49909 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Issue introduced in 6.0 with commit 235c67634230b0f9ad8c0185272fed36c892b1c4 and fixed in 6.1.120 with commit e087c9738ee1cdeebde346f4dfc819e5f7057e90 |
| Issue introduced in 6.0 with commit 235c67634230b0f9ad8c0185272fed36c892b1c4 and fixed in 6.6.64 with commit f38b09ba6a335c511eb27920bb9bb4a1b2c20084 |
| Issue introduced in 6.0 with commit 235c67634230b0f9ad8c0185272fed36c892b1c4 and fixed in 6.10.14 with commit 496486950c3d2aebf46a3be300296ac091da7a2d |
| Issue introduced in 6.0 with commit 235c67634230b0f9ad8c0185272fed36c892b1c4 and fixed in 6.11.3 with commit 5298270bdabe97be5b8236e544c9e936415fe1f2 |
| Issue introduced in 6.0 with commit 235c67634230b0f9ad8c0185272fed36c892b1c4 and fixed in 6.12 with commit 28574b08c70e56d34d6f6379326a860b96749051 |
| |
| 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-2024-49909 |
| 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/dcn32/dcn32_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/e087c9738ee1cdeebde346f4dfc819e5f7057e90 |
| https://git.kernel.org/stable/c/f38b09ba6a335c511eb27920bb9bb4a1b2c20084 |
| https://git.kernel.org/stable/c/496486950c3d2aebf46a3be300296ac091da7a2d |
| https://git.kernel.org/stable/c/5298270bdabe97be5b8236e544c9e936415fe1f2 |
| https://git.kernel.org/stable/c/28574b08c70e56d34d6f6379326a860b96749051 |
