Fixes: signed integer overflow: 2147483647 + 1 cannot be represented in type 'int' Fixes: 51896/clusterfuzz-testcase-minimized-ffmpeg_dem_WSVQA_fuzzer-4613908817903616
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavformat/westwood_vqa.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/libavformat/westwood_vqa.c b/libavformat/westwood_vqa.c index e3d2e2668c4..18948d14ccc 100644 --- a/libavformat/westwood_vqa.c +++ b/libavformat/westwood_vqa.c @@ -194,8 +194,10 @@ static int wsvqa_read_packet(AVFormatContext *s, * includes a whole frame as expected. */ wsvqa->vqfl_chunk_pos = avio_tell(pb); wsvqa->vqfl_chunk_size = (int)(chunk_size); - if (wsvqa->vqfl_chunk_size < 0 || wsvqa->vqfl_chunk_size > 3 * (1 << 20)) + if (wsvqa->vqfl_chunk_size < 0 || wsvqa->vqfl_chunk_size > 3 * (1 << 20)) { + wsvqa->vqfl_chunk_size = 0; return AVERROR_INVALIDDATA; + } /* We need a big seekback buffer because there can be SNxx, VIEW and ZBUF * chunks (<512 KiB total) in the stream before we read VQFR (<256 KiB) and * seek back here. */ -- 2.17.1 _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
