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| author | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-05 13:06:16 +0100 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2015-12-05 13:20:03 +0100 |
| commit | 7ed47e97297fd5ef473d0cc93f0455adbadaac83 (patch) | |
| tree | 65312addbf8e44ed31eb1452102a44eba82eb5d7 | |
| parent | 3f46e7bad57c5ee5a582d0f5d9d8b9078ccdfe1b (diff) | |
| download | ffmpeg-7ed47e97297fd5ef473d0cc93f0455adbadaac83.tar.gz | |
avformat/smacker: fix integer overflow with pts_inc
Fixes: ce19e41f0ef1e52a23edc488faecdb58/asan_heap-oob_2504e97_4202_ffa0df1baed14022b9bfd4f8ac23d0cb.smk
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -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 5dcf4adafe..de8bbdb07a 100644 --- a/libavformat/smacker.c +++ b/libavformat/smacker.c @@ -120,6 +120,11 @@ 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++; |