Description
In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Add null pointer check for get_first_active_display()
The function mod_hdcp_hdcp1_enable_encryption() 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 in mod_hdcp_hdcp2_enable_encryption().
Add a null pointer check for get_first_active_display() and return MOD_HDCP_STATUS_DISPLAY_NOT_FOUND if the function return null.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < 34d3e10ab905f06445f8dbd8a3d9697095e71bae; >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < 1ebcdf38887949def1a553ff3e45c98ed95a3cd0; >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < 5148c7ea69e9c5bf2f05081190f45ba96d3d1e7a; >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < 4ce9f2dc9ff7cc410e8c5d936ec551e26b9599a9; >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < b3005145eab98d36777660b8893466e4f630ae1c; >= 2deade5ede56581722c0d7672f28b09548dc0fc4, < c3e9826a22027a21d998d3e64882fa377b613006 |
| Linux | Linux | 5.8 |
References
- https://git.kernel.org/stable/c/1ebcdf38887949def1a553ff3e45c98ed95a3cd0Patch
- https://git.kernel.org/stable/c/34d3e10ab905f06445f8dbd8a3d9697095e71baePatch
- https://git.kernel.org/stable/c/4ce9f2dc9ff7cc410e8c5d936ec551e26b9599a9Patch
- https://git.kernel.org/stable/c/5148c7ea69e9c5bf2f05081190f45ba96d3d1e7aPatch
- https://git.kernel.org/stable/c/b3005145eab98d36777660b8893466e4f630ae1cPatch
- https://git.kernel.org/stable/c/c3e9826a22027a21d998d3e64882fa377b613006Patch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
Timeline
- Published
- Jul 25, 2025
- Last modified
- Jun 17, 2026
- NVD status
- Analyzed