Message ID | 20201017220842.17409-2-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | 50b29f081e9620dc39727adef707c2c323a8c095 |
Headers | show |
Series | [FFmpeg-devel,1/6] avformat/asfdec_f: Check for negative ext_len | expand |
Context | Check | Description |
---|---|---|
andriy/x86_make | success | Make finished |
andriy/x86_make_fate | success | Make fate finished |
On Sun, Oct 18, 2020 at 12:08:38AM +0200, Michael Niedermayer wrote: > Fixes: signed integer overflow: 55255 * 53207 cannot be represented in type 'int' > Fixes: 26387/clusterfuzz-testcase-minimized-ffmpeg_dem_AVS2_fuzzer-5684222226071552 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavformat/bethsoftvid.c | 6 ++++++ > 1 file changed, 6 insertions(+) will apply [...]
diff --git a/libavformat/bethsoftvid.c b/libavformat/bethsoftvid.c index 47a9a69330..709603daf5 100644 --- a/libavformat/bethsoftvid.c +++ b/libavformat/bethsoftvid.c @@ -28,6 +28,7 @@ */ #include "libavutil/channel_layout.h" +#include "libavutil/imgutils.h" #include "libavutil/intreadwrite.h" #include "avformat.h" #include "internal.h" @@ -72,6 +73,7 @@ static int vid_read_header(AVFormatContext *s) { BVID_DemuxContext *vid = s->priv_data; AVIOContext *pb = s->pb; + int ret; /* load main header. Contents: * bytes: 'V' 'I' 'D' @@ -84,6 +86,10 @@ static int vid_read_header(AVFormatContext *s) vid->bethsoft_global_delay = avio_rl16(pb); avio_rl16(pb); + ret = av_image_check_size(vid->width, vid->height, 0, s); + if (ret < 0) + return ret; + // wait until the first packet to create each stream vid->video_index = -1; vid->audio_index = -1;
Fixes: signed integer overflow: 55255 * 53207 cannot be represented in type 'int' Fixes: 26387/clusterfuzz-testcase-minimized-ffmpeg_dem_AVS2_fuzzer-5684222226071552 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/bethsoftvid.c | 6 ++++++ 1 file changed, 6 insertions(+)