media: mceusb: Fix potential out-of-bounds shift

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When processing a MCE_RSP_GETPORTSTATUS command, the bit index to set in
ir->txports_cabled comes from response data, and isn't validated.

As ir->txports_cabled is a u8, nothing should be done if the bit index
is greater than 7.

Cc: stable@vger.kernel.org
Reported-by: syzbot+ec3b3128c576e109171d@syzkaller.appspotmail.com
Signed-off-by: James Reynolds <jr@memlen.com>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

...

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James Reynolds 2020-12-22 13:07:04 +01:00 • committed by Mauro Carvalho Chehab

parent 4487e02155

commit 1b43bad31f

1 changed files with 1 additions and 1 deletions

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drivers/media/rc/mceusb.c

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