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| author | Michael Niedermayer <michael@niedermayer.cc> | 2020-04-20 23:27:04 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2020-07-03 12:10:24 +0200 |
| commit | 6f582f69dff5f497ad8c51d5b3abc78e19789844 (patch) | |
| tree | 36af5bb603fff837d1163a589dc9435a5cc78db8 | |
| parent | b2116b438e7ff9fca8272abb9f6ac2dfdb8f2cd4 (diff) | |
| download | ffmpeg-6f582f69dff5f497ad8c51d5b3abc78e19789844.tar.gz | |
avcodec/cbs_h265_syntax_template: Limit num_long_term_pics more strictly
The limit is based on hevcdec.c
Fixes: 20854/clusterfuzz-testcase-minimized-ffmpeg_BSF_HEVC_METADATA_fuzzer-5160442882424832
Fixes: out of array access
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 435fa373d1f5045b17de74934e44863e2fb3071f)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/cbs_h265_syntax_template.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/cbs_h265_syntax_template.c b/libavcodec/cbs_h265_syntax_template.c index 7977c22daa..52a81a4019 100644 --- a/libavcodec/cbs_h265_syntax_template.c +++ b/libavcodec/cbs_h265_syntax_template.c @@ -1321,7 +1321,7 @@ static int FUNC(slice_segment_header)(CodedBitstreamContext *ctx, RWContext *rw, infer(num_long_term_sps, 0); idx_size = 0; } - ue(num_long_term_pics, 0, HEVC_MAX_LONG_TERM_REF_PICS); + ue(num_long_term_pics, 0, HEVC_MAX_REFS - current->num_long_term_sps); for (i = 0; i < current->num_long_term_sps + current->num_long_term_pics; i++) { |