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| author | Michael Niedermayer <michael@niedermayer.cc> | 2017-09-24 12:58:42 +0200 |
|---|---|---|
| committer | Sean McGovern <gseanmcg@gmail.com> | 2017-09-24 12:58:42 +0200 |
| commit | ec683ed527cef9aad208d1daeb10d0e7fb63e75e (patch) | |
| tree | 1581e2c01019551a12700b908944d8468ffe557e | |
| parent | 9e361022782514d4d4ce97b9c9d5a7863a2de519 (diff) | |
| download | ffmpeg-ec683ed527cef9aad208d1daeb10d0e7fb63e75e.tar.gz | |
smacker: fix integer overflow with pts_inc
Bug-Id: 1073
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Sean McGovern <gseanmcg@gmail.com>
| -rw-r--r-- | libavformat/smacker.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/libavformat/smacker.c b/libavformat/smacker.c index 56c909bc06..304e746a91 100644 --- a/libavformat/smacker.c +++ b/libavformat/smacker.c @@ -117,6 +117,11 @@ static int smacker_read_header(AVFormatContext *s) smk->height = avio_rl32(pb); smk->frames = avio_rl32(pb); smk->pts_inc = (int32_t)avio_rl32(pb); + if (smk->pts_inc > INT_MAX / 100) { + av_log(s, AV_LOG_ERROR, "pts_inc %d is too large\n", smk->pts_inc); + return AVERROR_INVALIDDATA; + } + smk->flags = avio_rl32(pb); if(smk->flags & SMACKER_FLAG_RING_FRAME) smk->frames++; |