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media: v4l2-tpg: array index could become negative
authorHans Verkuil <hverkuil-cisco@xs4all.nl>
Thu, 8 Nov 2018 16:12:47 +0000 (11:12 -0500)
committerMauro Carvalho Chehab <mchehab+samsung@kernel.org>
Fri, 23 Nov 2018 11:23:06 +0000 (06:23 -0500)
commite5f71a27fa12c1a1b02ad478a568e76260f1815e
tree54e6e280b179c54a8b9eada950f1419a6d6f0046tree
parentb01783f801e65243afed9012c12343f5d63920ebcommit | diff
media: v4l2-tpg: array index could become negative

text[s] is a signed char, so using that as index into the font8x16 array
can result in negative indices. Cast it to u8 to be safe.

Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Reported-by: syzbot+ccf0a61ed12f2a7313ee@syzkaller.appspotmail.com
Cc: <stable@vger.kernel.org> # for v4.7 and up
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
drivers/media/common/v4l2-tpg/v4l2-tpg-core.c diff | blob | blame | history
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