| 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-2024-53108: drm/amd/display: Adjust VSDB parser for replay feature |
| |
| Description |
| =========== |
| |
| In the Linux kernel, the following vulnerability has been resolved: |
| |
| drm/amd/display: Adjust VSDB parser for replay feature |
| |
| At some point, the IEEE ID identification for the replay check in the |
| AMD EDID was added. However, this check causes the following |
| out-of-bounds issues when using KASAN: |
| |
| [ 27.804016] BUG: KASAN: slab-out-of-bounds in amdgpu_dm_update_freesync_caps+0xefa/0x17a0 [amdgpu] |
| [ 27.804788] Read of size 1 at addr ffff8881647fdb00 by task systemd-udevd/383 |
| |
| ... |
| |
| [ 27.821207] Memory state around the buggy address: |
| [ 27.821215] ffff8881647fda00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| [ 27.821224] ffff8881647fda80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| [ 27.821234] >ffff8881647fdb00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc |
| [ 27.821243] ^ |
| [ 27.821250] ffff8881647fdb80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc |
| [ 27.821259] ffff8881647fdc00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |
| [ 27.821268] ================================================================== |
| |
| This is caused because the ID extraction happens outside of the range of |
| the edid lenght. This commit addresses this issue by considering the |
| amd_vsdb_block size. |
| |
| (cherry picked from commit b7e381b1ccd5e778e3d9c44c669ad38439a861d8) |
| |
| The Linux kernel CVE team has assigned CVE-2024-53108 to this issue. |
| |
| |
| Affected and fixed versions |
| =========================== |
| |
| Fixed in 6.6.63 with commit 0a326fbc8f72a320051f27328d4d4e7abdfe68d7 |
| Fixed in 6.11.10 with commit 8db867061f4c76505ad62422b65d666b45289217 |
| Fixed in 6.12 with commit 16dd2825c23530f2259fc671960a3a65d2af69bd |
| |
| 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-2024-53108 |
| 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/amdgpu_dm/amdgpu_dm.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/0a326fbc8f72a320051f27328d4d4e7abdfe68d7 |
| https://git.kernel.org/stable/c/8db867061f4c76505ad62422b65d666b45289217 |
| https://git.kernel.org/stable/c/16dd2825c23530f2259fc671960a3a65d2af69bd |
