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Jani Nikula 8be40ece24 drm/i915/hdcp: require monotonically increasing seq_num_v ... [ Upstream commit db9e64c983 ] The HDCP 2.2 specification requires the seq_num_v to be monotonically increasing, and repeated seq_num_v needs to be treated as an integrity failure. Make it so. For the first message, seq_num_v must be zero, and is already checked. We can only check for less-than-or-equal for the subsequent messages, where hdcp2_encrypted is true. Discovered using AI-assisted static analysis confirmed by Intel Product Security. Reported-by: Martin Hodo <martin.hodo@intel.com> Fixes: d849178e2c ("drm/i915: Implement HDCP2.2 repeater authentication") Cc: stable@vger.kernel.org # v5.2+ Cc: Suraj Kandpal <suraj.kandpal@intel.com> Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com> Link: https://patch.msgid.link/20260625104407.1025614-1-jani.nikula@intel.com Signed-off-by: Jani Nikula <jani.nikula@intel.com> (cherry picked from commit 58a224375c) Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		History 2026-08-23 14:17:26 +02:00
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drm	drm/i915/hdcp: require monotonically increasing seq_num_v	2026-08-23 14:17:26 +02:00
host1x	gpu: host1x: Fix device reference leak in host1x_device_parse_dt() error path	2026-07-24 15:51:47 +02:00
ipu-v3	gpu: ipu-v3: common: Add of_node_put() for reference returned by of_graph_get_port_by_id()	2023-03-10 09:39:20 +01:00
trace	gpu/trace: add a gpu total memory usage tracepoint	2020-03-03 17:52:41 -05:00
vga	vgaarb: don't pass a cookie to vga_client_register	2021-07-21 10:29:10 +02:00
Makefile	gpu/trace: add a gpu total memory usage tracepoint	2020-03-03 17:52:41 -05:00