ffmpeg | branch: master | Michael Niedermayer <mich...@niedermayer.cc> | Thu Sep 13 03:33:50 2018 +0200| [e7b023e1db9fb13175929c02a02846d03510ec91] | committer: Michael Niedermayer
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 <mich...@niedermayer.cc> > http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=e7b023e1db9fb13175929c02a02846d03510ec91 --- libavcodec/dvdsubdec.c | 2 ++ 1 file changed, 2 insertions(+) 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; _______________________________________________ ffmpeg-cvslog mailing list ffmpeg-cvslog@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-cvslog
