RepoMirrors/ffmpeg
1
0
Fork 0
mirror of https://git.ffmpeg.org/ffmpeg.git synced 2025-02-07 23:32:33 +00:00
Code Issues Projects Releases Wiki Activity

flv: Validate the packet size

Browse Source 
Size can be negative at that point.

Bug-Id: 1041
CC: libav-stable@libav.org
This commit is contained in:
Luca Barbato 2017-04-17 14:10:52 +00:00
parent 4809781586
commit 279e3aaa14
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
libavformat/flvdec.c
View File

@ -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;