[FFmpeg-devel] [PATCH 5/9] avcodec/cbs_h266_syntax_template: Check bit depth with range extension

[Michael Niedermayer]

Fixes: shift exponent 62 is too large for 32-bit type 'int'
Fixes: 71020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6444916325023744

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael at 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)
+        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);
-- 
2.46.1