BSD compress LZW decoder buffer overflow

The LZW decompressor in 1 the BufCompressedFill function in fontfile/decompress.c in X.Org libXfont before 1.4.4 and 2 compress/compress.c in 4.3BSD, as used in zopen.c in OpenBSD before 3.8, FreeBSD, NetBSD 4.0.x and 5.0.x before 5.0.3 and 5.1.x before 5.1.1, FreeType 2.1.9, and other products,...