CVE-2022-49232
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Fix a NULL pointer dereference in amdgpu_dm_connector_add_common_modes() In amdgpu_dm_connector_add_common_modes(), amdgpu_dm_create_common_mode() is assigned to mode and is passed to drm_mode_probed_add() directly after that. drm_mode_probed_add() passes &mode->head to list_add_tail(), and there is a dereference of it in list_add_tail() without recoveries, which could lead to NULL pointer dereference on failure of amdgpu_dm_create_common_mode(). Fix this by adding a NULL check of mode. This bug was found by a static analyzer. Builds with 'make allyesconfig' show no new warnings, and our static analyzer no longer warns about this code.
How to fix
- linux linux_kernel4.19.238, 5.4.189, 5.10.110, 5.15.33, 5.16.19, 5.17.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linux linux_kernel | 4.15 ≤ v < 4.19.238, 4.20 ≤ v < 5.4.189, 5.5 ≤ v < 5.10.110, 5.11 ≤ v < 5.15.33, 5.16 ≤ v < 5.16.19, 5.17 ≤ v < 5.17.2 | 4.19.238, 5.4.189, 5.10.110, 5.15.33, 5.16.19, 5.17.2 |
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