Message ID | 20220321201946.16919-1-michael@niedermayer.cc |
---|---|
State | New |
Headers | show |
Series | [FFmpeg-devel,1/5] avcodec/vp9_superframe_bsf: Check in size | expand |
Context | Check | Description |
---|---|---|
yinshiyou/make_loongarch64 | success | Make finished |
yinshiyou/make_fate_loongarch64 | success | Make fate finished |
diff --git a/libavcodec/vp9_superframe_bsf.c b/libavcodec/vp9_superframe_bsf.c index 57681e29e4..bed9fd4ba2 100644 --- a/libavcodec/vp9_superframe_bsf.c +++ b/libavcodec/vp9_superframe_bsf.c @@ -108,7 +108,7 @@ static int vp9_superframe_filter(AVBSFContext *ctx, AVPacket *pkt) if (res < 0) return res; - marker = pkt->data[pkt->size - 1]; + marker = pkt->size ? pkt->data[pkt->size - 1] : 0; if ((marker & 0xe0) == 0xc0) { int nbytes = 1 + ((marker >> 3) & 0x3); int n_frames = 1 + (marker & 0x7), idx_sz = 2 + n_frames * nbytes;
Fixes: Out of array read Fixes: 45722/clusterfuzz-testcase-minimized-ffmpeg_BSF_VP9_SUPERFRAME_fuzzer-5173378975137792 Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg Signed-off-by: Michael Niedermayer <michael@niedermayer.cc> --- libavcodec/vp9_superframe_bsf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)