Wentao Liang c3e9826a22 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. Fixes: 2deade5ede ("drm/amd/display: Remove hdcp display state with mst fix") Signed-off-by: Wentao Liang <vulab@iscas.ac.cn> Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> Cc: stable@vger.kernel.org # v5.8		2025-05-29 10:57:13 -04:00
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Makefile	…
hdcp.c	drm/amd/display: revert Exit idle optimizations before HDCP execution	2024-03-20 13:36:29 -04:00
hdcp.h	drm/amd/display: HDCP Locality check using DMUB Fused IO	2025-04-07 18:01:07 -04:00
hdcp1_execution.c	drm/amd/display: Revert "Check HDCP returned status"	2024-07-23 17:07:10 -04:00
hdcp1_transition.c	drm/amd/display: add authentication_complete in hdcp output	2021-08-09 15:43:33 -04:00
hdcp2_execution.c	drm/amd/display: HDCP Locality check using DMUB Fused IO	2025-04-07 18:01:07 -04:00
hdcp2_transition.c	drm/amd/display: HDCP Locality check using DMUB Fused IO	2025-04-07 18:01:07 -04:00
hdcp_ddc.c	drm/amd/display: HDCP Locality check using DMUB Fused IO	2025-04-07 18:01:07 -04:00
hdcp_log.c	drm/amd/display: add authentication_complete in hdcp output	2021-08-09 15:43:33 -04:00
hdcp_log.h	drm/amd/display: Fix hdcp_log.h codestyle	2024-01-05 16:10:44 -05:00
hdcp_psp.c	drm/amd/display: Add null pointer check for get_first_active_display()	2025-05-29 10:57:13 -04:00
hdcp_psp.h	drm/amd/display: Fix hdcp_psp.h codestyle	2024-01-05 16:10:44 -05:00