Fixes: assertion failure Fixes: left shift of 1 by 31 places cannot be represented in type 'int' Fixes: 23264/clusterfuzz-testcase-minimized-ffmpeg_BSF_AV1_METADATA_fuzzer-6308429248593920
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc> --- libavcodec/cbs_av1.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/cbs_av1.c b/libavcodec/cbs_av1.c index 29b316e011..4092c9dd06 100644 --- a/libavcodec/cbs_av1.c +++ b/libavcodec/cbs_av1.c @@ -125,6 +125,8 @@ static int cbs_av1_write_uvlc(CodedBitstreamContext *ctx, PutBitContext *pbc, put_bits(pbc, 1, 1); } else { zeroes = av_log2(value + 1); + if (zeroes > 30) + return AVERROR(EINVAL); v = value - (1 << zeroes) + 1; put_bits(pbc, zeroes + 1, 1); put_bits(pbc, zeroes, v); -- 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".
