| 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-2024-26914: drm/amd/display: fix incorrect mpc_combine array size |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: fix incorrect mpc_combine array size |
| |
| [why] |
| MAX_SURFACES is per stream, while MAX_PLANES is per asic. The |
| mpc_combine is an array that records all the planes per asic. Therefore |
| MAX_PLANES should be used as the array size. Using MAX_SURFACES causes |
| array overflow when there are more than 3 planes. |
| |
| [how] |
| Use the MAX_PLANES for the mpc_combine array size. |
| |
| The Linux kernel CVE team has assigned CVE-2024-26914 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.7.6 with commit 0bd8ef618a42d7e6ea3f701065264e15678025e3 |
| Fixed in 6.8 with commit 39079fe8e660851abbafa90cd55cbf029210661f |
| |
| 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-2024-26914 |
| 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/dml/dcn32/dcn32_fpu.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/0bd8ef618a42d7e6ea3f701065264e15678025e3 |
| https://git.kernel.org/stable/c/39079fe8e660851abbafa90cd55cbf029210661f |
