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media: v4l2-compat-ioctl32: prevent go past max size
authorMauro Carvalho Chehab <mchehab@s-opensource.com>
Wed, 11 Apr 2018 15:47:32 +0000 (11:47 -0400)
committerMauro Carvalho Chehab <mchehab@s-opensource.com>
Tue, 17 Apr 2018 09:50:00 +0000 (05:50 -0400)
commitd4b33d21dd47a0666c587c77c423bb9019085828
tree42295573e6220f1db1517775ee352abf81de5b6ctree | snapshot
parentea47f1372e618059268fbf79e462afb2ded44b82commit | diff
media: v4l2-compat-ioctl32: prevent go past max size

As warned by smatch:
drivers/media/v4l2-core/v4l2-compat-ioctl32.c:879 put_v4l2_ext_controls32() warn: check for integer overflow 'count'

The access_ok() logic should check for too big arrays too.

Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
drivers/media/v4l2-core/v4l2-compat-ioctl32.c diff | blob | history
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