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| author | Michael Niedermayer <michael@niedermayer.cc> | 2021-03-30 13:36:08 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2021-09-10 17:04:26 +0300 |
| commit | 746fda9419ec4b073c23b08de50686c9be81de41 (patch) | |
| tree | e2ce7cc4e639950c6a50b046d810183fba0f2191 | |
| parent | ddcaa14abbe1fec4099ff844ac60e089b3b4e92e (diff) | |
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 b3a1fda144..35490fc5df 100644 --- a/libavcodec/h265_metadata_bsf.c +++ b/libavcodec/h265_metadata_bsf.c @@ -359,7 +359,7 @@ static int h265_metadata_filter(AVBSFContext *bsf, AVPacket *pkt) } // 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 == REMOVE) ff_cbs_delete_unit(ctx->cbc, au, 0); } else { |