From 9d25b9665edb45c31ad6dda9612fd6e63fc289f3 Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Thu, 19 Sep 2024 22:32:36 +0200 Subject: [PATCH] avcodec/cbs_h266_syntax_template: Check bit depth with range extension Fixes: shift exponent 62 is too large for 32-bit type 'int' Fixes: 71020/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-6444916325023744 Fixes: 71285/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_VVC_fuzzer-4761971281428480 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer --- 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 0704da1d40..b4165b43b3 100644 --- a/libavcodec/cbs_h266_syntax_template.c +++ b/libavcodec/cbs_h266_syntax_template.c @@ -1645,6 +1645,8 @@ static int FUNC(sps)(CodedBitstreamContext *ctx, RWContext *rw, ub(7, sps_extension_7bits); if (current->sps_range_extension_flag) { + if (current->sps_bitdepth_minus8 <= 10 - 8) + return AVERROR_INVALIDDATA; CHECK(FUNC(sps_range_extension)(ctx, rw, current)); } else { infer(sps_extended_precision_flag, 0);