[FFmpeg-devel] [PATCH 3/6] Prevent NULL dereference when the palette is missing in the xan decoder.
fenrir at elivagar.org
fenrir at elivagar.org
Thu Sep 29 01:04:51 CEST 2011
From: Laurent Aimar <fenrir at videolan.org>
---
libavcodec/xan.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/libavcodec/xan.c b/libavcodec/xan.c
index 3359102..1f0fab6 100644
--- a/libavcodec/xan.c
+++ b/libavcodec/xan.c
@@ -555,6 +555,9 @@ static int xan_decode_frame(AVCodecContext *avctx,
}
buf_size = buf_end - buf;
}
+ if (s->palettes_count <= 0)
+ return AVERROR_INVALIDDATA;
+
if ((ret = avctx->get_buffer(avctx, &s->current_frame))) {
av_log(s->avctx, AV_LOG_ERROR, "get_buffer() failed\n");
return ret;
--
1.7.2.5
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