ffmpeg | branch: master | Michael Niedermayer <[email protected]> | Fri Apr 23 17:35:20 2021 +0200| [f034c2e36acb7d0c11dc1849ddf8a67bde44eff4] | committer: Michael Niedermayer
avformat/asfdec_f: Check sizeX against padding Fixes: signed integer overflow: 2147483607 + 64 cannot be represented in type 'int' Fixes: 29102/clusterfuzz-testcase-minimized-ffmpeg_dem_ASF_fuzzer-6753897878257664 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <[email protected]> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=f034c2e36acb7d0c11dc1849ddf8a67bde44eff4 --- libavformat/asfdec_f.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavformat/asfdec_f.c b/libavformat/asfdec_f.c index 053c815977..ff6ddfb967 100644 --- a/libavformat/asfdec_f.c +++ b/libavformat/asfdec_f.c @@ -415,7 +415,7 @@ static int asf_read_stream_properties(AVFormatContext *s, int64_t size) tag1 = avio_rl32(pb); avio_skip(pb, 20); if (sizeX > 40) { - if (size < sizeX - 40) + if (size < sizeX - 40 || sizeX - 40 > INT_MAX - AV_INPUT_BUFFER_PADDING_SIZE) return AVERROR_INVALIDDATA; st->codecpar->extradata_size = ffio_limit(pb, sizeX - 40); st->codecpar->extradata = av_mallocz(st->codecpar->extradata_size + _______________________________________________ ffmpeg-cvslog mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
