Message ID | 20190616174850.31656-4-michael@niedermayer.cc |
---|---|
State | Accepted |
Commit | bfb58bdd7015a6df2d130c92cf284d6a2362f3df |
Headers | show |
diff --git a/libavcodec/bintext.c b/libavcodec/bintext.c index 49b75c9e27..1aeed21f51 100644 --- a/libavcodec/bintext.c +++ b/libavcodec/bintext.c @@ -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;
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> --- libavcodec/bintext.c | 4 ++++ 1 file changed, 4 insertions(+)