highperfocused/ffmpeg
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

avcodec/h265_metadata_bsf: Check nb_units before accessing the first in h265_metadata_update_fragment()

Browse Source 
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>
This commit is contained in:
Michael Niedermayer 2021-03-30 12:36:08 +02:00
parent ddcaa14abb
commit 746fda9419
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
libavcodec/h265_metadata_bsf.c
View File

@ -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 {