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)
References
Configurations
Configuration 1 (hide)
|
History
08 Apr 2025, 18:39
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://git.kernel.org/stable/c/d0e94f4807ff0df66cf447d6b4bbb8ac830e99c3 - Patch | |
| References | () https://git.kernel.org/stable/c/e7cadd5d3a8ffe334d0229ba9eda4290138d56e7 - Patch | |
| References | () https://git.kernel.org/stable/c/f610c46771ef1047e46d61807aa7c69cd29e63d8 - Patch | |
| References | () https://git.kernel.org/stable/c/f6aed043ee5d75b3d1bfc452b1a9584b63c8f76b - Patch | |
| First Time |
Linux linux Kernel
Linux |
|
| CWE | CWE-476 | |
| CPE | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |
Information
Published : 2024-05-01 13:15
Updated : 2025-04-08 18:39
NVD link : CVE-2024-27040
Mitre link : CVE-2024-27040
CVE.ORG link : CVE-2024-27040
JSON object : View
Products Affected
linux
- linux_kernel
CWE
CWE-476
NULL Pointer Dereference