On 7/23/2023 3:03 PM, Michael Niedermayer wrote:
Fixes: NULL pointer dereference
Fixes:
60269/clusterfuzz-testcase-minimized-ffmpeg_BSF_VVC_METADATA_fuzzer-5215449416335360
Found-by: continuous fuzzing process
https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <mich...@niedermayer.cc>
---
libavcodec/h266_metadata_bsf.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/h266_metadata_bsf.c b/libavcodec/h266_metadata_bsf.c
index c0dbf8ef96..1f0f875cfe 100644
--- a/libavcodec/h266_metadata_bsf.c
+++ b/libavcodec/h266_metadata_bsf.c
@@ -43,7 +43,7 @@ static int h266_metadata_update_fragment(AVBSFContext *bsf,
AVPacket *pkt,
int err, i;
// If an AUD is present, it must be the first NAL unit.
- if (pu->units[0].type == VVC_AUD_NUT) {
+ if (pu->nb_units && pu->units[0].type == VVC_AUD_NUT) {
if (ctx->aud == BSF_ELEMENT_REMOVE)
ff_cbs_delete_unit(pu, 0);
} else if ( pkt && ctx->aud == BSF_ELEMENT_INSERT) {
Should be ok.
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