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| author | Anton Khirnov <anton@khirnov.net> | 2013-11-28 10:54:35 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2014-02-04 22:00:13 +0100 |
| commit | 2240e2078d53d3cfce8ff1dda64e58fa72038602 (patch) | |
| tree | 64864719067430e51aa036e822fa279d6f9ffc1a /libavcodec/truemotion1.c | |
| parent | 1713eec29add37b654ec6bf262b843d139c1ffc6 (diff) | |
| download | ffmpeg-2240e2078d53d3cfce8ff1dda64e58fa72038602.tar.gz | |
truemotion1: check the header size
Fixes invalid reads.
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC:libav-stable@libav.org
Diffstat (limited to 'libavcodec/truemotion1.c')
| -rw-r--r-- | libavcodec/truemotion1.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavcodec/truemotion1.c b/libavcodec/truemotion1.c index b1497d5011..270a030c33 100644 --- a/libavcodec/truemotion1.c +++ b/libavcodec/truemotion1.c @@ -323,6 +323,11 @@ static int truemotion1_decode_header(TrueMotion1Context *s) return AVERROR_INVALIDDATA; } + if (header.header_size + 1 > s->size) { + av_log(s->avctx, AV_LOG_ERROR, "Input packet too small.\n"); + return AVERROR_INVALIDDATA; + } + /* unscramble the header bytes with a XOR operation */ for (i = 1; i < header.header_size; i++) header_buffer[i - 1] = s->buf[i] ^ s->buf[i + 1]; |