tree fb7eabafd37cdddee9c082bb29844474699f6a8f
parent 528941ca05734f24a7568c1c082125f2b635c4eb
author Lasse Collin <lasse.collin@tukaani.org> 1294880479 -0800
committer Linus Torvalds <torvalds@linux-foundation.org> 1294934604 -0800

Decompressors: validate match distance in decompress_unlzma.c

Validate the newly decoded distance (rep0) in process_bit1().  This is to
detect corrupt LZMA data quickly.  The old code can run for long time
producing garbage until it hits the end of the input.

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>