avcodec: fix aac/ac3 parser bitstream buffer size
authorMichael Niedermayer <michaelni@gmx.at>
Thu, 21 Aug 2014 23:15:57 +0000 (01:15 +0200)
committerMichael Niedermayer <michaelni@gmx.at>
Fri, 3 Oct 2014 01:16:37 +0000 (03:16 +0200)
commit29ee8b72c40ba694fec18229428214b871dd4154
treed38d0694677bb4562fa05b75b2575532b5f34bc6
parent25864cf562c3c7571a27408e17b8ad39a6fd9cdc
avcodec: fix aac/ac3 parser bitstream buffer size

Buffers containing copies of the AAC and AC3 header bits were not padded
before parsing, violating init_get_bits() buffer padding requirement,
leading to potential buffer read overflows.
This change adds FF_INPUT_BUFFER_PADDING_SIZE bytes to the bit buffer
for parsing the header in each of aac_parser.c and ac3_parser.c.

Based on patch by: Matt Wolenetz <wolenetz@chromium.org>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
(cherry picked from commit fccd85b9f30525f88692f53134eba41f1f2d90db)

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
libavcodec/aac_parser.c
libavcodec/ac3_parser.c