diff options
| author | Anton Khirnov | 2013-03-06 09:06:16 +0100 |
|---|---|---|
| committer | Anton Khirnov | 2013-03-08 08:11:22 +0100 |
| commit | 8a49d2bcbe7573bb4b765728b2578fac0d19763f (patch) | |
| tree | 1454a812d4748305dcc3221a970bf9c43e7b9f62 /libavcodec/xxan.c | |
| parent | 6c7d339afcd114f77d765d79863514c263e9c2f0 (diff) | |
xxan: fix invalid memory access in xan_decode_frame_type0()
The loop a few lines below the xan_unpack() call accesses up to
dec_size * 2 bytes into y_buffer, so dec_size must be limited to
buffer_size / 2.
CC:libav-stable@libav.org
Diffstat (limited to 'libavcodec/xxan.c')
| -rw-r--r-- | libavcodec/xxan.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/xxan.c b/libavcodec/xxan.c index 47ab54a7f9..2bc9ff697b 100644 --- a/libavcodec/xxan.c +++ b/libavcodec/xxan.c @@ -308,7 +308,7 @@ static int xan_decode_frame_type0(AVCodecContext *avctx) int dec_size; bytestream2_seek(&s->gb, 8 + corr_off, SEEK_SET); - dec_size = xan_unpack(s, s->scratch_buffer, s->buffer_size); + dec_size = xan_unpack(s, s->scratch_buffer, s->buffer_size / 2); if (dec_size < 0) dec_size = 0; for (i = 0; i < dec_size; i++) |