Medium · published September 5, 2025
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()
The function mod_hdcp_hdcp1_create_session() calls the function
get_first_active_display(), but does not check its return value.
The return value is a null pointer if the display list is empty.
This will lead to a null pointer dereference.
Add a null pointer check for get_first_active_display() and return
MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null.
This is similar to the commit c3e9826a2202
("drm/amd/display: Add null pointer check for get_first_active_display()").
(cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)
| Product | Versions | Fixed in |
|---|---|---|
| linux/linux_kernel | ≥ 5.8, < 5.15.190 | 5.15.190 |
| linux/linux_kernel | ≥ 5.16, < 6.1.149 | 6.1.149 |
| linux/linux_kernel | ≥ 6.2, < 6.6.103 | 6.6.103 |
| linux/linux_kernel | ≥ 6.7, < 6.12.44 | 6.12.44 |
| linux/linux_kernel | ≥ 6.13, < 6.16.4 | 6.16.4 |
| linux/linux_kernel | all versions | — |
| linux/linux_kernel | all versions | — |
| debian/debian_linux | all versions | — |