Fixes: Infinite loop Fixes: 29722/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_JPEG2000_fuzzer-6412228041506816
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/jpeg2000dec.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/libavcodec/jpeg2000dec.c b/libavcodec/jpeg2000dec.c index 624542c2f8..63edbcda09 100644 --- a/libavcodec/jpeg2000dec.c +++ b/libavcodec/jpeg2000dec.c @@ -2342,8 +2342,12 @@ static int jp2_find_codestream(Jpeg2000DecoderContext *s) return 0; } atom_size = bytestream2_get_be32u(&s->g); + if (atom_size < 16 || (int64_t)bytestream2_tell(&s->g) + atom_size - 16 > INT_MAX) + return AVERROR_INVALIDDATA; atom_end = bytestream2_tell(&s->g) + atom_size - 16; } else { + if (atom_size < 8 || (int64_t)bytestream2_tell(&s->g) + atom_size - 8 > INT_MAX) + return AVERROR_INVALIDDATA; atom_end = bytestream2_tell(&s->g) + atom_size - 8; } -- 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".
