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glibc/glibc-rh757887.patch
Jeff Law 2c67eb0fec * Wed Nov 30 2011 Jeff Law <law@redhat.com> - 2.14.90-21 
- Don't fail in makedb if SELinux is disabled (#750858)
  - Fix access after end of search string in regex matcher (#757887)
`
2011-12-01 11:50:43 -07:00

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commit f3a6cc0a560a17f32a3e90d2f20501a53cab6058
Author: Andreas Schwab <schwab@redhat.com>
Date: Tue Nov 29 10:52:22 2011 +0100
Fix access after end of search string in regex matcher
--- a/ChangeLog 2011-11-30 12:43:22.312632113 -0700
+++ b/ChangeLog 2011-11-30 12:43:50.569624022 -0700
@@ -1,3 +1,14 @@
+2011-11-29 Andreas Schwab <schwab@redhat.com>
+
+ * locale/weight.h (findidx): Add parameter len.
+ * locale/weightwc.h (findidx): Likewise.
+ * posix/fnmatch_loop.c (FCT): Adjust caller.
+ * posix/regcomp.c (build_equiv_class): Likewise.
+ * posix/regex_internal.h (re_string_elem_size_at): Likewise.
+ * posix/regexec.c (check_node_accept_bytes): Likewise.
+ * string/strcoll_l.c (STRCOLL): Likewise.
+ * string/strxfrm_l.c (STRXFRM): Likewise.
+
2011-11-14 Andreas Schwab <schwab@redhat.com>
* malloc/arena.c (arena_get2): Don't call reused_arena when
diff --git a/locale/weight.h b/locale/weight.h
index dc70a00..967e176 100644
--- a/locale/weight.h
+++ b/locale/weight.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996,1997,1998,1999,2000,2003,2004 Free Software Foundation, Inc.
+/* Copyright (C) 1996,1997,1998,1999,2000,2003,2004,2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper, <drepper@cygnus.com>.
@@ -20,7 +20,7 @@
/* Find index of weight. */
auto inline int32_t
__attribute ((always_inline))
-findidx (const unsigned char **cpp)
+findidx (const unsigned char **cpp, size_t len)
{
int_fast32_t i = table[*(*cpp)++];
const unsigned char *cp;
@@ -34,6 +34,7 @@ findidx (const unsigned char **cpp)
Search for the correct one. */
cp = &extra[-i];
usrc = *cpp;
+ --len;
while (1)
{
size_t nhere;
@@ -56,7 +57,7 @@ findidx (const unsigned char **cpp)
already. */
size_t cnt;
- for (cnt = 0; cnt < nhere; ++cnt)
+ for (cnt = 0; cnt < nhere && cnt < len; ++cnt)
if (cp[cnt] != usrc[cnt])
break;
@@ -79,13 +80,13 @@ findidx (const unsigned char **cpp)
size_t cnt;
size_t offset = 0;
- for (cnt = 0; cnt < nhere; ++cnt)
+ for (cnt = 0; cnt < nhere && cnt < len; ++cnt)
if (cp[cnt] != usrc[cnt])
break;
if (cnt != nhere)
{
- if (cp[cnt] > usrc[cnt])
+ if (cnt == len || cp[cnt] > usrc[cnt])
{
/* Cannot be in this range. */
cp += 2 * nhere;
diff --git a/locale/weightwc.h b/locale/weightwc.h
index 9ea1126..7862091 100644
--- a/locale/weightwc.h
+++ b/locale/weightwc.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1996-2001,2003,2004,2005,2007 Free Software Foundation, Inc.
+/* Copyright (C) 1996-2001,2003,2004,2005,2007,2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper, <drepper@cygnus.com>.
@@ -20,7 +20,7 @@
/* Find index of weight. */
auto inline int32_t
__attribute ((always_inline))
-findidx (const wint_t **cpp)
+findidx (const wint_t **cpp, size_t len)
{
wint_t ch = *(*cpp)++;
int32_t i = __collidx_table_lookup ((const char *) table, ch);
@@ -32,6 +32,7 @@ findidx (const wint_t **cpp)
/* Oh well, more than one sequence starting with this byte.
Search for the correct one. */
const int32_t *cp = (const int32_t *) &extra[-i];
+ --len;
while (1)
{
size_t nhere;
@@ -54,7 +55,7 @@ findidx (const wint_t **cpp)
already. */
size_t cnt;
- for (cnt = 0; cnt < nhere; ++cnt)
+ for (cnt = 0; cnt < nhere && cnt < len; ++cnt)
if (cp[cnt] != usrc[cnt])
break;
@@ -75,7 +76,7 @@ findidx (const wint_t **cpp)
size_t cnt;
size_t offset;
- for (cnt = 0; cnt < nhere - 1; ++cnt)
+ for (cnt = 0; cnt < nhere - 1 && cnt < len; ++cnt)
if (cp[cnt] != usrc[cnt])
break;
diff --git a/posix/fnmatch_loop.c b/posix/fnmatch_loop.c
index 18a6667..72bd3ee 100644
--- a/posix/fnmatch_loop.c
+++ b/posix/fnmatch_loop.c
@@ -412,7 +412,7 @@ FCT (pattern, string, string_end, no_leading_period, flags, ends, alloca_used)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
# endif
- idx = findidx (&cp);
+ idx = findidx (&cp, 1);
if (idx != 0)
{
/* We found a table entry. Now see whether the
@@ -422,7 +422,7 @@ FCT (pattern, string, string_end, no_leading_period, flags, ends, alloca_used)
int32_t idx2;
const UCHAR *np = (const UCHAR *) n;
- idx2 = findidx (&np);
+ idx2 = findidx (&np, string_end - n);
if (idx2 != 0
&& (idx >> 24) == (idx2 >> 24)
&& len == weights[idx2 & 0xffffff])
diff --git a/posix/regcomp.c b/posix/regcomp.c
index b238c08..34ee845 100644
--- a/posix/regcomp.c
+++ b/posix/regcomp.c
@@ -1,5 +1,5 @@
/* Extended regular expression matching and search library.
- Copyright (C) 2002-2007,2009,2010 Free Software Foundation, Inc.
+ Copyright (C) 2002-2007,2009,2010,2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
@@ -3409,19 +3409,18 @@ build_equiv_class (bitset_t sbcset, const unsigned char *name)
_NL_COLLATE_EXTRAMB);
indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
_NL_COLLATE_INDIRECTMB);
- idx1 = findidx (&cp);
- if (BE (idx1 == 0 || cp < name + strlen ((const char *) name), 0))
+ idx1 = findidx (&cp, -1);
+ if (BE (idx1 == 0 || *cp != '\0', 0))
/* This isn't a valid character. */
return REG_ECOLLATE;
/* Build single byte matcing table for this equivalence class. */
- char_buf[1] = (unsigned char) '\0';
len = weights[idx1 & 0xffffff];
for (ch = 0; ch < SBC_MAX; ++ch)
{
char_buf[0] = ch;
cp = char_buf;
- idx2 = findidx (&cp);
+ idx2 = findidx (&cp, 1);
/*
idx2 = table[ch];
*/
--- a/posix/regex_internal.h 2011-11-30 12:47:02.706567482 -0700
+++ a/posix/regex_internal.h 2011-11-30 12:47:32.969558337 -0700
@@ -756,7 +756,7 @@
indirect = (const int32_t *) _NL_CURRENT (LC_COLLATE,
_NL_COLLATE_INDIRECTMB);
p = pstr->mbs + idx;
- tmp = findidx (&p);
+ tmp = findidx (&p, pstr->len - idx);
return p - pstr->mbs - idx;
}
else
diff --git a/posix/regexec.c b/posix/regexec.c
index 9e0c565..3ea810b 100644
--- a/posix/regexec.c
+++ b/posix/regexec.c
@@ -3924,7 +3924,7 @@ check_node_accept_bytes (const re_dfa_t *dfa, int node_idx,
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
indirect = (const int32_t *)
_NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
- int32_t idx = findidx (&cp);
+ int32_t idx = findidx (&cp, elem_len);
if (idx > 0)
for (i = 0; i < cset->nequiv_classes; ++i)
{
diff --git a/string/strcoll_l.c b/string/strcoll_l.c
index d8d1139..fb77d08 100644
--- a/string/strcoll_l.c
+++ b/string/strcoll_l.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1995-1997,2002,2004,2007,2010 Free Software Foundation, Inc.
+/* Copyright (C) 1995-1997,2002,2004,2007,2010,2011 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Ulrich Drepper <drepper@gnu.org>, 1995.
@@ -205,7 +205,7 @@ STRCOLL (s1, s2, l)
while (*us1 != L('\0'))
{
- int32_t tmp = findidx (&us1);
+ int32_t tmp = findidx (&us1, -1);
rule1arr[idx1max] = tmp >> 24;
idx1arr[idx1max] = tmp & 0xffffff;
idx1cnt = idx1max++;
@@ -267,7 +267,7 @@ STRCOLL (s1, s2, l)
while (*us2 != L('\0'))
{
- int32_t tmp = findidx (&us2);
+ int32_t tmp = findidx (&us2, -1);
rule2arr[idx2max] = tmp >> 24;
idx2arr[idx2max] = tmp & 0xffffff;
idx2cnt = idx2max++;
diff --git a/string/strxfrm_l.c b/string/strxfrm_l.c
index 220253c..b06556d 100644
--- a/string/strxfrm_l.c
+++ b/string/strxfrm_l.c
@@ -176,7 +176,7 @@ STRXFRM (STRING_TYPE *dest, const STRING_TYPE *src, size_t n, __locale_t l)
idxmax = 0;
do
{
- int32_t tmp = findidx (&usrc);
+ int32_t tmp = findidx (&usrc, -1);
rulearr[idxmax] = tmp >> 24;
idxarr[idxmax] = tmp & 0xffffff;
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