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| author | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2016-09-03 14:21:46 +0200 |
|---|---|---|
| committer | Carl Eugen Hoyos <cehoyos@ag.or.at> | 2016-09-03 14:21:46 +0200 |
| commit | e82b181f8096d20a163b054b8117838437d6b694 (patch) | |
| tree | 623cb6d1ba048ad5e68dd1ff59a6808f6d4dbde2 /libavcodec/mjpegdec.c | |
| parent | b4d7c1f84b0229b481ce16302ff1a5fe879ec940 (diff) | |
| download | ffmpeg-e82b181f8096d20a163b054b8117838437d6b694.tar.gz | |
lavc/mjpegdec: Only read JFIF thumbnail size if the segment is long enough.
Fixes ticket #5805.
Diffstat (limited to 'libavcodec/mjpegdec.c')
| -rw-r--r-- | libavcodec/mjpegdec.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c index 0645a1d2ac..84d929ad9b 100644 --- a/libavcodec/mjpegdec.c +++ b/libavcodec/mjpegdec.c @@ -1690,6 +1690,8 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) s->avctx->sample_aspect_ratio.num, s->avctx->sample_aspect_ratio.den); + len -= 8; + if (len >= 2) { t_w = get_bits(&s->gb, 8); t_h = get_bits(&s->gb, 8); if (t_w && t_h) { @@ -1697,7 +1699,8 @@ static int mjpeg_decode_app(MJpegDecodeContext *s) if (len -10 - (t_w * t_h * 3) > 0) len -= t_w * t_h * 3; } - len -= 10; + len -= 2; + } goto out; } |