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dsicinav: Check for out of bounds writes

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Signed-off-by: Janne Grunau <janne-libav@jannau.net>
This commit is contained in:
Laurent Aimar 2011-09-29 23:13:35 +00:00 • committed by Janne Grunau
parent 64263dd526
commit 1720603287
1 changed files with 2 additions and 0 deletions
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2
libavcodec/dsicinav.c
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@ -219,6 +219,8 @@ static int cinvideo_decode_frame(AVCodecContext *avctx,
if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0))) if (bitmap_frame_size < palette_colors_count * (3 + (palette_type != 0)))
return AVERROR_INVALIDDATA; return AVERROR_INVALIDDATA;
if (palette_type == 0) { if (palette_type == 0) {
if (palette_colors_count > 256)
return AVERROR_INVALIDDATA;
for (i = 0; i < palette_colors_count; ++i) { for (i = 0; i < palette_colors_count; ++i) {
cin->palette[i] = bytestream_get_le24(&buf); cin->palette[i] = bytestream_get_le24(&buf);
bitmap_frame_size -= 3; bitmap_frame_size -= 3;