Description
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)
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
2deade5ede56581722c0d7672f28b09548dc0fc4 to < 2af45aadb7b5d3852c76e2d1e985289ada6f48bfaffected2deade5ede56581722c0d7672f28b09548dc0fc4 to < ee0373b20bb67b1f00a1b25ccd24c8ac996b6446affected2deade5ede56581722c0d7672f28b09548dc0fc4 to < 857b8387a9777e42b36e0400be99b54c251eaf9aaffected2deade5ede56581722c0d7672f28b09548dc0fc4 to < 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bdaffected2deade5ede56581722c0d7672f28b09548dc0fc4 to < 2ee86b764c54e0d6a5464fb023b630fdf20869cdaffected2deade5ede56581722c0d7672f28b09548dc0fc4 to < 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119affected
Linux Linux
Default version status: affected
5.8affected0 to < 5.8unaffected5.15.190 to ≤ 5.15.*unaffected6.1.149 to ≤ 6.1.*unaffected6.6.103 to ≤ 6.6.*unaffected6.12.44 to ≤ 6.12.*unaffected6.16.4 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2af45aadb7b5d3852c76e2d1e985289ada6f48bf ↗
- https://git.kernel.org/stable/c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446 ↗
- https://git.kernel.org/stable/c/857b8387a9777e42b36e0400be99b54c251eaf9a ↗
- https://git.kernel.org/stable/c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd ↗
- https://git.kernel.org/stable/c/2ee86b764c54e0d6a5464fb023b630fdf20869cd ↗
- https://git.kernel.org/stable/c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119 ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html ↗