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Decompressors: fix header validation in decompress_unlzma.c
Validation of header.pos calls error() but doesn't make the function return to indicate an error to the caller. Instead the decoding is attempted with invalid header.pos. This fixes it. Signed-off-by: Lasse Collin <lasse.collin@tukaani.org> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Alain Knaff <alain@knaff.lu> Cc: Albin Tonnerre <albin.tonnerre@free-electrons.com> Cc: Phillip Lougher <phillip@lougher.demon.co.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -574,8 +574,10 @@ STATIC inline int INIT unlzma(unsigned char *buf, int in_len,
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((unsigned char *)&header)[i] = *rc.ptr++;
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}
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if (header.pos >= (9 * 5 * 5))
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if (header.pos >= (9 * 5 * 5)) {
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error("bad header");
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goto exit_1;
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}
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mi = 0;
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lc = header.pos;
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