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| author | Martin Storsjö <martin@martin.st> | 2013-09-29 01:04:05 +0300 |
|---|---|---|
| committer | Martin Storsjö <martin@martin.st> | 2013-09-29 20:02:32 +0300 |
| commit | aa0dd52434768da64f1f3d8ae92bcf980c1adffc (patch) | |
| tree | 991b305a968b743791fa16caeb5418da4d04255e | |
| parent | fc739b3eefa0b58d64e7661621da94a94dbc8a82 (diff) | |
| download | ffmpeg-aa0dd52434768da64f1f3d8ae92bcf980c1adffc.tar.gz | |
xxan: Disallow odd width
Decoded data is always written in pairs within this decoder.
This fixes writes out of bounds.
Reported-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
CC: libav-stable@libav.org
Signed-off-by: Martin Storsjö <martin@martin.st>
| -rw-r--r-- | libavcodec/xxan.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/libavcodec/xxan.c b/libavcodec/xxan.c index 2bc9ff697b..05ce7ffae6 100644 --- a/libavcodec/xxan.c +++ b/libavcodec/xxan.c @@ -50,6 +50,10 @@ static av_cold int xan_decode_init(AVCodecContext *avctx) av_log(avctx, AV_LOG_ERROR, "Invalid frame height: %d.\n", avctx->height); return AVERROR(EINVAL); } + if (avctx->width & 1) { + av_log(avctx, AV_LOG_ERROR, "Invalid frame width: %d.\n", avctx->width); + return AVERROR(EINVAL); + } s->buffer_size = avctx->width * avctx->height; s->y_buffer = av_malloc(s->buffer_size); |