On 9/19/2024 7:56 PM, Michael Niedermayer wrote:
Fixes: shift exponent 62 is too large for 32-bit type 'int' Fixes: 71020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6444916325023744Found-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 | 3 +++ 1 file changed, 3 insertions(+) diff --git a/libavcodec/cbs_h266_syntax_template.c b/libavcodec/cbs_h266_syntax_template.c index a8f5af04d02..1c111126563 100644 --- a/libavcodec/cbs_h266_syntax_template.c +++ b/libavcodec/cbs_h266_syntax_template.c @@ -1041,6 +1041,9 @@ static int FUNC(sps_range_extension)(CodedBitstreamContext *ctx, RWContext *rw, { int err;+ if (current->sps_bitdepth_minus8 < 10)
sps_bitdepth_minus8 can only be between 0 and 8, so this is basically making it abort on any and every sample with SPS range extension.
Also, it doesn't seem to be used here at all, so i don't see how this is fixing anything. Can you share the sample?
+ return AVERROR_INVALIDDATA;
+
flag(sps_extended_precision_flag);
if (current->sps_transform_skip_enabled_flag)
flag(sps_ts_residual_coding_rice_present_in_sh_flag);
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