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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-30 12:36:08 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-04-01 11:38:45 +0200 |
| commit | de9f4351fa7db3e652767adf6ada17273fffbe6d (patch) | |
| tree | c41d1e4806de86ebb353ada509eba0f11f26b5b0 | |
| parent | 1ff644e509d78bbb690d1c8a6c8402dbd6851e3e (diff) | |
| download | ffmpeg-de9f4351fa7db3e652767adf6ada17273fffbe6d.tar.gz | |
avcodec/h265_metadata_bsf: Check nb_units before accessing the first in h265_metadata_update_fragment()
Fixes: null pointer dereference
Fixes: 32113/clusterfuzz-testcase-minimized-ffmpeg_BSF_HEVC_METADATA_fuzzer-4803262287052800
Same as 0c48c332eeb2866d9353125f701e099c48889463
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 497ea04dbda78d4eb9cffd208737b676f838725c)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
| -rw-r--r-- | libavcodec/h265_metadata_bsf.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/h265_metadata_bsf.c b/libavcodec/h265_metadata_bsf.c index 59325c0471..d841839762 100644 --- a/libavcodec/h265_metadata_bsf.c +++ b/libavcodec/h265_metadata_bsf.c @@ -335,7 +335,7 @@ static int h265_metadata_update_fragment(AVBSFContext *bsf, AVPacket *pkt, int err, i; // If an AUD is present, it must be the first NAL unit. - if (au->units[0].type == HEVC_NAL_AUD) { + if (au->nb_units && au->units[0].type == HEVC_NAL_AUD) { if (ctx->aud == BSF_ELEMENT_REMOVE) ff_cbs_delete_unit(au, 0); } else { |