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| author | Anton Khirnov <anton@khirnov.net> | 2014-12-14 21:01:59 +0100 |
|---|---|---|
| committer | Anton Khirnov <anton@khirnov.net> | 2014-12-20 11:16:15 +0100 |
| commit | 954aafaa961c32c655ad38fb622e8cbe249ebd5a (patch) | |
| tree | 374073be5a4c038f56f3ec9ffd890291506cdb9f | |
| parent | 0ceb2dffb6ba082a8abcc57c53a14b2512f0aa48 (diff) | |
| download | ffmpeg-954aafaa961c32c655ad38fb622e8cbe249ebd5a.tar.gz | |
jvdec: check frame dimensions
The frame size must be set by the caller and each dimension must be a
multiple of 8.
CC: libav-stable@libav.org
Bug-ID: CVE-2014-8542
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
(cherry picked from commit 88626e5af8d006e67189bf10b96b982502a7e8ad)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit 55788572ea7b89cdd77bab1cf4bf06d14ead34f5)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
(cherry picked from commit 8f238dd9bdd9eba569fcaa564a07fbdd89412a14)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Conflicts:
libavcodec/jvdec.c
(cherry picked from commit 50cb695bf124b0bd4d9e2b3c1bfdd08b35b14438)
Signed-off-by: Anton Khirnov <anton@khirnov.net>
Conflicts:
libavcodec/jvdec.c
| -rw-r--r-- | libavcodec/jvdec.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/libavcodec/jvdec.c b/libavcodec/jvdec.c index f2c97526c0..cc05688652 100644 --- a/libavcodec/jvdec.c +++ b/libavcodec/jvdec.c @@ -42,6 +42,14 @@ static av_cold int decode_init(AVCodecContext *avctx) JvContext *s = avctx->priv_data; avctx->pix_fmt = PIX_FMT_PAL8; dsputil_init(&s->dsp, avctx); + + if (!avctx->width || !avctx->height || + (avctx->width & 7) || (avctx->height & 7)) { + av_log(avctx, AV_LOG_ERROR, "Invalid video dimensions: %dx%d\n", + avctx->width, avctx->height); + return AVERROR(EINVAL); + } + return 0; } |