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| author | Chenyuan Yang <chenyuan0y@gmail.com> | 2025-07-23 21:36:41 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-08-28 16:31:13 +0200 |
| commit | 97fc94c5fd3c6ac5a13e457d38ee247737b8c4bd (patch) | |
| tree | 316c9986fdefd9684855d7d6c2a5a29eafafd9a8 /net/core/dev.c | |
| parent | 9d9b045626289190ccb43e7adb2f8ace25bca8d0 (diff) | |
drm/amd/display: Add null pointer check in mod_hdcp_hdcp1_create_session()
[ Upstream commit 7a2ca2ea64b1b63c8baa94a8f5deb70b2248d119 ]
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()").
Fixes: 2deade5ede56 ("drm/amd/display: Remove hdcp display state with mst fix")
Signed-off-by: Chenyuan Yang <chenyuan0y@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 5e43eb3cd731649c4f8b9134f857be62a416c893)
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'net/core/dev.c')
0 files changed, 0 insertions, 0 deletions