diff options
| author | Michael Niedermayer <michael@niedermayer.cc> | 2018-09-13 04:33:50 +0300 |
|---|---|---|
| committer | Michael Niedermayer <michael@niedermayer.cc> | 2018-09-20 00:16:00 +0300 |
| commit | e7b023e1db9fb13175929c02a02846d03510ec91 (patch) | |
| tree | 8d848a6ed1250d882eefe63f62b5c5bc858214a2 /libavcodec/dvdsubdec.c | |
| parent | c88afa44c4823aba7b6f4a1b01fd6a4169643c57 (diff) | |
avcodec/dvdsubdec: Sanity check len in decode_rle()
Fixes: Timeout
Fixes: 9778/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_DVDSUB_fuzzer-5186007132536832
Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
Diffstat (limited to 'libavcodec/dvdsubdec.c')
| -rw-r--r-- | libavcodec/dvdsubdec.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/dvdsubdec.c b/libavcodec/dvdsubdec.c index 13d52c8c68..632a53adab 100644 --- a/libavcodec/dvdsubdec.c +++ b/libavcodec/dvdsubdec.c @@ -125,6 +125,8 @@ static int decode_rle(uint8_t *bitmap, int linesize, int w, int h, uint8_t used_ len = decode_run_8bit(&gb, &color); else len = decode_run_2bit(&gb, &color); + if (len != INT_MAX && len > w - x) + return AVERROR_INVALIDDATA; len = FFMIN(len, w - x); memset(d + x, color, len); used_color[color] = 1; |