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.rheinha...@outlook.com>
---
 libavcodec/vp9_superframe_split_bsf.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libavcodec/vp9_superframe_split_bsf.c 
b/libavcodec/vp9_superframe_split_bsf.c
index 7f0cad1ea0..c9cf21b541 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);
     }
 
-- 
2.32.0

_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel

To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".

Reply via email to