nixpkgs/pkgs/development/libraries/glibc/security-4a28f4d5.patch

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From 4a28f4d55a6cc33474c0792fe93b5942d81bf185 Mon Sep 17 00:00:00 2001
From: Andreas Schwab <schwab@suse.de>
Date: Thu, 26 Feb 2015 14:55:24 +0100
Subject: [PATCH] Fix read past end of pattern in fnmatch (bug 18032)
---
ChangeLog | 7 +++++++
NEWS | 2 +-
posix/fnmatch_loop.c | 5 ++---
posix/tst-fnmatch3.c | 8 +++++---
4 files changed, 15 insertions(+), 7 deletions(-)
diff --git a/posix/fnmatch_loop.c b/posix/fnmatch_loop.c
index c0cb2fc..72c5d8f 100644
--- a/posix/fnmatch_loop.c
+++ b/posix/fnmatch_loop.c
@@ -945,14 +945,13 @@ FCT (pattern, string, string_end, no_leading_period, flags, ends, alloca_used)
}
else if (c == L('[') && *p == L('.'))
{
- ++p;
while (1)
{
c = *++p;
- if (c == '\0')
+ if (c == L('\0'))
return FNM_NOMATCH;
- if (*p == L('.') && p[1] == L(']'))
+ if (c == L('.') && p[1] == L(']'))
break;
}
p += 2;
diff --git a/posix/tst-fnmatch3.c b/posix/tst-fnmatch3.c
index d27a557..75bc00a 100644
--- a/posix/tst-fnmatch3.c
+++ b/posix/tst-fnmatch3.c
@@ -21,9 +21,11 @@
int
do_test (void)
{
- const char *pattern = "[[:alpha:]'[:alpha:]\0]";
-
- return fnmatch (pattern, "a", 0) != FNM_NOMATCH;
+ if (fnmatch ("[[:alpha:]'[:alpha:]\0]", "a", 0) != FNM_NOMATCH)
+ return 1;
+ if (fnmatch ("[a[.\0.]]", "a", 0) != FNM_NOMATCH)
+ return 1;
+ return 0;
}
#define TEST_FUNCTION do_test ()