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)
Product status
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before 2af45aadb7b5d3852c76e2d1e985289ada6f48bf
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before ee0373b20bb67b1f00a1b25ccd24c8ac996b6446
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before 857b8387a9777e42b36e0400be99b54c251eaf9a
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before 2ee86b764c54e0d6a5464fb023b630fdf20869cd
2deade5ede56581722c0d7672f28b09548dc0fc4 (git) before 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119
5.8
Any version before 5.8
5.15.190 (semver)
6.1.149 (semver)
6.6.103 (semver)
6.12.44 (semver)
6.16.4 (semver)
6.17 (original_commit_for_fix)
References
git.kernel.org/...c/2af45aadb7b5d3852c76e2d1e985289ada6f48bf
git.kernel.org/...c/ee0373b20bb67b1f00a1b25ccd24c8ac996b6446
git.kernel.org/...c/857b8387a9777e42b36e0400be99b54c251eaf9a
git.kernel.org/...c/97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd
git.kernel.org/...c/2ee86b764c54e0d6a5464fb023b630fdf20869cd
git.kernel.org/...c/7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119
