Copied from Fedora. http://pkgs.fedoraproject.org/cgit/unzip.git/plain/unzip-6.0-overflow.patch?id=d18f821e diff --git a/extract.c b/extract.c index a0a4929..9ef80b3 100644 --- a/extract.c +++ b/extract.c @@ -2214,6 +2214,7 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) ulg eb_ucsize; uch *eb_ucptr; int r; + ush method; if (compr_offset < 4) /* field is not compressed: */ return PK_OK; /* do nothing and signal OK */ @@ -2223,6 +2224,12 @@ static int test_compr_eb(__G__ eb, eb_size, compr_offset, test_uc_ebdata) eb_size <= (compr_offset + EB_CMPRHEADLEN))) return IZ_EF_TRUNC; /* no compressed data! */ + method = makeword(eb + (EB_HEADSIZE + compr_offset)); + if ((method == STORED) && (eb_size != compr_offset + EB_CMPRHEADLEN + eb_ucsize)) + return PK_ERR; /* compressed & uncompressed +
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