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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e7b07ceef2a650e5ed8ca37997689e086c680daf to < 2c729dec8c1e3e2892fde5ce8181553860914e74affectede7b07ceef2a650e5ed8ca37997689e086c680daf to < 57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9affectede7b07ceef2a650e5ed8ca37997689e086c680daf to < 19a7eba284790cfbba2945deb2363cf03ce41648affectede7b07ceef2a650e5ed8ca37997689e086c680daf to < bdc7429708a0772d90c208975694f7c2133b1202affectede7b07ceef2a650e5ed8ca37997689e086c680daf to < f4eaa999fec78dec2a9c2d797438e05cbffb125baffectede7b07ceef2a650e5ed8ca37997689e086c680daf to < 639b3b9def0a6a3f316a195d705d14113236e89caffectede7b07ceef2a650e5ed8ca37997689e086c680daf to < 588a70177df3b1777484267584ef38ab2ca899a2affected
Linux Linux
Default version status: affected
4.15affected0 to < 4.15unaffected4.19.238 to ≤ 4.19.*unaffected5.4.189 to ≤ 5.4.*unaffected5.10.110 to ≤ 5.10.*unaffected5.15.33 to ≤ 5.15.*unaffected5.16.19 to ≤ 5.16.*unaffected5.17.2 to ≤ 5.17.*unaffected5.18 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2c729dec8c1e3e2892fde5ce8181553860914e74 ↗
- https://git.kernel.org/stable/c/57f4ad5e286fe4599c8fc63cf89f85f9eec7f9c9 ↗
- https://git.kernel.org/stable/c/19a7eba284790cfbba2945deb2363cf03ce41648 ↗
- https://git.kernel.org/stable/c/bdc7429708a0772d90c208975694f7c2133b1202 ↗
- https://git.kernel.org/stable/c/f4eaa999fec78dec2a9c2d797438e05cbffb125b ↗
- https://git.kernel.org/stable/c/639b3b9def0a6a3f316a195d705d14113236e89c ↗
- https://git.kernel.org/stable/c/588a70177df3b1777484267584ef38ab2ca899a2 ↗