from the specification: For each OLS, there shall be at least one layer that is an output layer. In other words, for any value of i in the range of 0 to TotalNumOlss − 1, inclusive, the value of NumOutputLayersInOls[ i ] shall be greater than or equal to 1
Fixes: index 257 out of bounds for type 'uint8_t [257]' Fixes: 61160/clusterfuzz-testcase-minimized-ffmpeg_BSF_VVC_METADATA_fuzzer-6709397181825024 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_h266_syntax_template.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/libavcodec/cbs_h266_syntax_template.c b/libavcodec/cbs_h266_syntax_template.c index f0d428a478..2077aa63bf 100644 --- a/libavcodec/cbs_h266_syntax_template.c +++ b/libavcodec/cbs_h266_syntax_template.c @@ -891,6 +891,8 @@ static int FUNC(vps) (CodedBitstreamContext *ctx, RWContext *rw, } } } + if (!num_output_layers_in_ols[i]) + return AVERROR_INVALIDDATA; } for (i = 1; i < total_num_olss; i++) { int num_layers_in_ols = 0; -- 2.25.1 _______________________________________________ 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".
