Message ID | 20201114222628.6486-1-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | 8b50e8bc2975fad85e0713e05940ee9ecb5e8a18 |
Headers | show |
Series | [FFmpeg-devel,1/4] avformat/iff: Check size before skip | expand |
Context | Check | Description |
---|---|---|
andriy/x86_make | success | Make finished |
andriy/x86_make_fate | success | Make fate finished |
On Sat, Nov 14, 2020 at 11:26:25PM +0100, Michael Niedermayer wrote: > Fixes: Infinite loop > Fixes: 27292/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5731168991051776 > > Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg > Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> > --- > libavformat/iff.c | 3 +++ > 1 file changed, 3 insertions(+) will apply patchset [...]
diff --git a/libavformat/iff.c b/libavformat/iff.c index a70184f105..f017684620 100644 --- a/libavformat/iff.c +++ b/libavformat/iff.c @@ -259,6 +259,9 @@ static int parse_dsd_prop(AVFormatContext *s, AVStream *st, uint64_t eof) uint64_t size = avio_rb64(pb); uint64_t orig_pos = avio_tell(pb); + if (size >= INT64_MAX) + return AVERROR_INVALIDDATA; + switch(tag) { case MKTAG('A','B','S','S'): if (size < 8)
Fixes: Infinite loop Fixes: 27292/clusterfuzz-testcase-minimized-ffmpeg_dem_IFF_fuzzer-5731168991051776 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavformat/iff.c | 3 +++ 1 file changed, 3 insertions(+)