CVE-2024-27040
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add 'replay' NULL check in 'edp_set_replay_allow_active()' In the first if statement, we're checking if 'replay' is NULL.
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Add 'replay' NULL check in 'edp_set_replay_allow_active()' In the first if statement, we're checking if 'replay' is NULL. But in the second if statement, we're not checking if 'replay' is NULL again before calling replay->funcs->replay_set_power_opt(). if (replay == NULL && force_static) return false; ... if (link->replay_settings.replay_feature_enabled && replay->funcs->replay_set_power_opt) { replay->funcs->replay_set_power_opt(replay, *power_opts, panel_inst); link->replay_settings.replay_power_opt_active = *power_opts; } If 'replay' is NULL, this will cause a null pointer dereference. Fixes the below found by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/link/protocols/link_edp_panel_control.c:895 edp_set_replay_allow_active() error: we previously assumed 'replay' could be null (see line 887)
- CVSS 3.1
- 4.7 MEDIUMCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.25% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3Patch
- https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7Patch
- https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8Patch
- https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76bPatch
- https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3Patch
- https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7Patch
- https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8Patch
- https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76bPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.