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| author | Rodrigo Siqueira <[email protected]> | 2024-11-05 15:40:23 +0000 |
|---|---|---|
| committer | Alex Deucher <[email protected]> | 2024-11-11 16:54:11 +0000 |
| commit | b7e381b1ccd5e778e3d9c44c669ad38439a861d8 (patch) | |
| tree | 798089f528bf4b6a1923c5ef62da2469e1b90779 /drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | |
| parent | drm/amd/display: Remove unused code (diff) | |
| download | kernel-b7e381b1ccd5e778e3d9c44c669ad38439a861d8.tar.gz kernel-b7e381b1ccd5e778e3d9c44c669ad38439a861d8.zip | |
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.
Cc: ChiaHsuan Chung <[email protected]>
Reviewed-by: Leo Li <[email protected]>
Signed-off-by: Rodrigo Siqueira <[email protected]>
Signed-off-by: Hamza Mahfooz <[email protected]>
Signed-off-by: Alex Deucher <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c')
0 files changed, 0 insertions, 0 deletions