1From: sms 2Subject: Fix CVE-2014-8140: out-of-bounds write issue in test_compr_eb() 3Bug-Debian: http://bugs.debian.org/773722 4 5The patch comes from unzip_6.0-8+deb7u2.debian.tar.gz 6 7Upstream-Status: Backport 8CVE: CVE-2014-8140 9 10Signed-off-by: Roy Li <rongqing.li@windriver.com> 11 12Index: unzip60/extract.c 13=================================================================== 14--- unzip60.orig/extract.c 15+++ unzip60/extract.c 16@@ -2233,10 +2233,17 @@ static int test_compr_eb(__G__ eb, eb_si 17 if (compr_offset < 4) /* field is not compressed: */ 18 return PK_OK; /* do nothing and signal OK */ 19 20+ /* Return no/bad-data error status if any problem is found: 21+ * 1. eb_size is too small to hold the uncompressed size 22+ * (eb_ucsize). (Else extract eb_ucsize.) 23+ * 2. eb_ucsize is zero (invalid). 2014-12-04 SMS. 24+ * 3. eb_ucsize is positive, but eb_size is too small to hold 25+ * the compressed data header. 26+ */ 27 if ((eb_size < (EB_UCSIZE_P + 4)) || 28- ((eb_ucsize = makelong(eb+(EB_HEADSIZE+EB_UCSIZE_P))) > 0L && 29- eb_size <= (compr_offset + EB_CMPRHEADLEN))) 30- return IZ_EF_TRUNC; /* no compressed data! */ 31+ ((eb_ucsize = makelong( eb+ (EB_HEADSIZE+ EB_UCSIZE_P))) == 0L) || 32+ ((eb_ucsize > 0L) && (eb_size <= (compr_offset + EB_CMPRHEADLEN)))) 33+ return IZ_EF_TRUNC; /* no/bad compressed data! */ 34 35 method = makeword(eb + (EB_HEADSIZE + compr_offset)); 36 if ((method == STORED) && 37