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various security fixes and precautionary checks

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Originally committed as revision 3822 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2005-01-12 00:16:25 +00:00
parent f14d4e7e21
commit 0ecca7a49f
36 changed files with 314 additions and 89 deletions
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4
libavcodec/indeo3.c
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@@ -196,6 +196,10 @@ static unsigned long iv_decode_frame(Indeo3DecodeContext *s,
hdr_height = le2me_16(*(uint16_t *)buf_pos);
buf_pos += 2;
hdr_width = le2me_16(*(uint16_t *)buf_pos);
if(avcodec_check_dimensions(NULL, hdr_width, hdr_height))
return -1;
buf_pos += 2;
chroma_height = ((hdr_height >> 2) + 3) & 0x7ffc;
chroma_width = ((hdr_width >> 2) + 3) & 0x7ffc;