dsicinav: Check for out of bounds writes

Signed-off-by: Janne Grunau <janne-libav@jannau.net>

dsicinav: Check for out of bounds writes
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
17206032 · Laurent Aimar · Janne Grunau · 64263dd5 · 17206032
Commit 17206032 authored Sep 29, 2011 by Laurent Aimar Committed by Janne Grunau Oct 07, 2011
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dsicinav.c libavcodec/dsicinav.c +2 -0

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--- a/libavcodec/dsicinav.c
+++ b/libavcodec/dsicinav.c
@@ -219,6 +219,8 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
    if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
        return AVERROR_INVALIDDATA;
    if (palette_type == 0) {
+        if (palette_colors_count > 256)
+            return AVERROR_INVALIDDATA;
        for (i = 0; i < palette_colors_count; ++i) {
            cin->palette[i] = bytestream_get_le24(&buf);
            bitmap_frame_size -= 3;