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| author | Luca Barbato <lu_zero@gentoo.org> | 2017-04-17 14:10:52 +0000 |
|---|---|---|
| committer | Luca Barbato <lu_zero@gentoo.org> | 2017-04-20 15:39:18 +0000 |
| commit | 279e3aaa14daba6b7a37d75f3fb6e29c732d123f (patch) | |
| tree | 1da2923a6874502fce11a1df3ac5be483e80f661 /libavformat/flvdec.c | |
| parent | 4809781586d1c956005f72946a2aab5915eab350 (diff) | |
| download | ffmpeg-279e3aaa14daba6b7a37d75f3fb6e29c732d123f.tar.gz | |
flv: Validate the packet size
Size can be negative at that point.
Bug-Id: 1041
CC: libav-stable@libav.org
Diffstat (limited to 'libavformat/flvdec.c')
| -rw-r--r-- | libavformat/flvdec.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/libavformat/flvdec.c b/libavformat/flvdec.c index 693c859ebf..1b29740f41 100644 --- a/libavformat/flvdec.c +++ b/libavformat/flvdec.c @@ -912,6 +912,12 @@ skip: st->codecpar->codec_id == AV_CODEC_ID_H264) { int type = avio_r8(s->pb); size--; + + if (size < 0) { + ret = AVERROR_INVALIDDATA; + goto leave; + } + if (st->codecpar->codec_id == AV_CODEC_ID_H264) { // sign extension int32_t cts = (avio_rb24(s->pb) + 0xff800000) ^ 0xff800000; |