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Commit 883f794c authored by Junlin Li's avatar Junlin Li Committed by Greg Kroah-Hartman
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drivers: media: dvb-frontends/rtl2830: fix an out-of-bounds write error



[ Upstream commit 46d7ebfe6a75a454a5fa28604f0ef1491f9d8d14 ]

Ensure index in rtl2830_pid_filter does not exceed 31 to prevent
out-of-bounds access.

dev->filters is a 32-bit value, so set_bit and clear_bit functions should
only operate on indices from 0 to 31. If index is 32, it will attempt to
access a non-existent 33rd bit, leading to out-of-bounds access.
Change the boundary check from index > 32 to index >= 32 to resolve this
issue.

Fixes: df70ddad ("[media] rtl2830: implement PID filter")
Signed-off-by: default avatarJunlin Li <make24@iscas.ac.cn>
Signed-off-by: default avatarHans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 49b33c38
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