| Message ID | 20200902213949.9768-2-michael@niedermayer.cc |
|---|---|
| State | Accepted |
| Commit | c313089fbe1df71b5406dd9d7e4d36361051c620 |
| Headers | show |
| Series | [FFmpeg-devel,1/2] avcodec/vc1_block: Fix integer overflow in ac value | expand |
| Context | Check | Description |
|---|---|---|
| andriy/default | pending | |
| andriy/make | success | Make finished |
| andriy/make_fate | success | Make fate finished |
On Wed, Sep 02, 2020 at 11:39:49PM +0200, Michael Niedermayer wrote: > Fixes: signed integer overflow: 8224000000 * 1629552639 cannot be represented in type 'long' > Fixes: 24908/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4658478506049536 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavformat/dxa.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) will apply [...]
diff --git a/libavformat/dxa.c b/libavformat/dxa.c index 27fa6afb6a..909c5ba2ba 100644 --- a/libavformat/dxa.c +++ b/libavformat/dxa.c @@ -143,7 +143,7 @@ static int dxa_read_header(AVFormatContext *s) c->readvid = !c->has_sound; c->vidpos = avio_tell(pb); s->start_time = 0; - s->duration = (int64_t)c->frames * AV_TIME_BASE * num / den; + s->duration = av_rescale(c->frames, AV_TIME_BASE * (int64_t)num, den); av_log(s, AV_LOG_DEBUG, "%d frame(s)\n",c->frames); return 0;
Fixes: signed integer overflow: 8224000000 * 1629552639 cannot be represented in type 'long' Fixes: 24908/clusterfuzz-testcase-minimized-ffmpeg_DEMUXER_fuzzer-4658478506049536 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/dxa.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)