diff options
| author | Michael Niedermayer <[email protected]> | 2020-02-18 23:28:33 +0100 |
|---|---|---|
| committer | Michael Niedermayer <[email protected]> | 2020-05-19 17:17:36 +0200 |
| commit | 602caf11c2dc1f57ea699f01286e2914b89e3f0a (patch) | |
| tree | 97aedb9b44380ae679f5311e76c663dcba7ac5d7 | |
| parent | 726904b6d0a3353e726c06c8480351c83121bf9d (diff) | |
avcodec/svq1dec: Check that there is data left after the header
Fixes: Timeout (21sec -> 255ms)
Fixes: 20709/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_SVQ1_fuzzer-5085075089915904
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <[email protected]>
(cherry picked from commit 55e344ee5aa6f6e04e50bbac457e0ca53433ab75)
Signed-off-by: Michael Niedermayer <[email protected]>
| -rw-r--r-- | libavcodec/svq1dec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/svq1dec.c b/libavcodec/svq1dec.c index d3e60c3a4a..b61ae348d2 100644 --- a/libavcodec/svq1dec.c +++ b/libavcodec/svq1dec.c @@ -602,6 +602,8 @@ static int svq1_decode_frame_header(AVCodecContext *avctx, AVFrame *frame) if (skip_1stop_8data_bits(bitbuf) < 0) return AVERROR_INVALIDDATA; } + if (get_bits_left(bitbuf) <= 0) + return AVERROR_INVALIDDATA; s->width = width; s->height = height; |