virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2025-01-29 22:00:58 +02:00
Code Issues Releases Activity

avcodec/bintext: Check font height

Browse Source 
Fixes: division by zero
Fixes: 15257/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_BINTEXT_fuzzer-5757352881422336

Found-by: continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit bfb58bdd7015a6df2d130c92cf284d6a2362f3df)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2019-06-16 16:01:45 +02:00
parent 00d5a47039
commit 6aa01c0625
1 changed files with 4 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
libavcodec/bintext.c
View File

@ -63,6 +63,10 @@ static av_cold int decode_init(AVCodecContext *avctx)
av_log(avctx, AV_LOG_ERROR, "not enough extradata\n");
return AVERROR_INVALIDDATA;
}
if (!s->font_height) {
av_log(avctx, AV_LOG_ERROR, "invalid font height\n");
return AVERROR_INVALIDDATA;
}
} else {
s->font_height = 8;
s->flags = 0;