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| author | Martin Storsjö <martin@martin.st> | 2013-09-11 14:54:05 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-09-16 11:04:52 +0300 |
| commit | 342c43d154e586bc022c86b168fe8d36f69da9d3 (patch) | |
| tree | 38aefee9f9ccf037ce87726f096a4acaa98257f6 /libavformat/omadec.c | |
| parent | a06a5b78e2c3bd2e12aff0627a3b65c6fee555a5 (diff) | |
omadec: Properly check lengths before incrementing the position
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
Diffstat (limited to 'libavformat/omadec.c')
| -rw-r--r-- | libavformat/omadec.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/libavformat/omadec.c b/libavformat/omadec.c index e49178290e..274112e5af 100644 --- a/libavformat/omadec.c +++ b/libavformat/omadec.c @@ -172,7 +172,11 @@ static int nprobe(AVFormatContext *s, uint8_t *enc_header, unsigned size, taglen = AV_RB32(&enc_header[pos + 32]); datalen = AV_RB32(&enc_header[pos + 36]) >> 4; - pos += 44 + taglen; + pos += 44; + if (size - pos < taglen) + return -1; + + pos += taglen; if (datalen << 4 > size - pos) return -1; |