diff options
| author | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-03-22 23:50:54 +0100 |
|---|---|---|
| committer | Andreas Rheinhardt <andreas.rheinhardt@outlook.com> | 2022-03-31 10:48:50 +0200 |
| commit | d311d820a77550740d3b868440e476adaf12a872 (patch) | |
| tree | 7e1bc615e3ba6a4cf5907bdfaff26a271af64774 | |
| parent | d20ef30f534151ce749b064034c339562724cc34 (diff) | |
| download | ffmpeg-d311d820a77550740d3b868440e476adaf12a872.tar.gz | |
avcodec/vp9_superframe_split_bsf: Don't read inexistent data
Fixes: Out of array read
Fixes: 45137/clusterfuzz-testcase-minimized-ffmpeg_BSF_VP9_SUPERFRAME_SPLIT_fuzzer-4984270639202304
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
| -rw-r--r-- | libavcodec/vp9_superframe_split_bsf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/vp9_superframe_split_bsf.c b/libavcodec/vp9_superframe_split_bsf.c index 98f5cc83d0..cddd48119c 100644 --- a/libavcodec/vp9_superframe_split_bsf.c +++ b/libavcodec/vp9_superframe_split_bsf.c @@ -51,6 +51,9 @@ static int vp9_superframe_split_filter(AVBSFContext *ctx, AVPacket *out) return ret; in = s->buffer_pkt; + if (!in->size) + goto passthrough; + marker = in->data[in->size - 1]; if ((marker & 0xe0) == 0xc0) { int length_size = 1 + ((marker >> 3) & 0x3); @@ -121,6 +124,7 @@ static int vp9_superframe_split_filter(AVBSFContext *ctx, AVPacket *out) out->pts = AV_NOPTS_VALUE; } else { +passthrough: av_packet_move_ref(out, s->buffer_pkt); } |