Author: aurel32
Date: 2013-11-29 21:37:04 +0000 (Fri, 29 Nov 2013)
New Revision: 5821
Added:
glibc-package/branches/glibc-branch-wheezy/debian/patches/any/cvs-CVE-2012-44xx.diff
Modified:
glibc-package/branches/glibc-branch-wheezy/debian/changelog
glibc-package/branches/glibc-branch-wheezy/debian/patches/series
Log:
* patches/any/cvs-CVE-2012-44xx.diff: backport overflow fixes in strcoll
addressing CVE-2012-4412 and CVE-2012-4424 (Closes: #687530, #689423).
Modified: glibc-package/branches/glibc-branch-wheezy/debian/changelog
===================================================================
--- glibc-package/branches/glibc-branch-wheezy/debian/changelog 2013-11-29
21:16:51 UTC (rev 5820)
+++ glibc-package/branches/glibc-branch-wheezy/debian/changelog 2013-11-29
21:37:04 UTC (rev 5821)
@@ -2,6 +2,8 @@
* debian/testsuite-checking/compare.sh: Disable failing the build on test
regressions to ease the pain of ongoing stable/security maintenance.
+ * patches/any/cvs-CVE-2012-44xx.diff: backport overflow fixes in strcoll
+ addressing CVE-2012-4412 and CVE-2012-4424 (Closes: #687530, #689423).
-- Aurelien Jarno <[email protected]> Fri, 29 Nov 2013 21:59:21 +0100
Added:
glibc-package/branches/glibc-branch-wheezy/debian/patches/any/cvs-CVE-2012-44xx.diff
===================================================================
---
glibc-package/branches/glibc-branch-wheezy/debian/patches/any/cvs-CVE-2012-44xx.diff
(rev 0)
+++
glibc-package/branches/glibc-branch-wheezy/debian/patches/any/cvs-CVE-2012-44xx.diff
2013-11-29 21:37:04 UTC (rev 5821)
@@ -0,0 +1,1107 @@
+2013-09-23 Siddhesh Poyarekar <[email protected]>
+
+ [BZ #14547]
+ * string/tst-strcoll-overflow.c: New test case.
+ * string/Makefile (xtests): Add tst-strcoll-overflow.
+ * string/strcoll_l.c (STRCOLL): Skip allocating memory for
+ cache if string sizes may cause integer overflow.
+
+ [BZ #14547]
+ * string/strcoll_l.c (coll_seq): New members rule, idx,
+ save_idx and back_us.
+ (get_next_seq_nocache): New function.
+ (do_compare_nocache): New function.
+ (STRCOLL): Use get_next_seq_nocache and do_compare_nocache
+ when malloc fails.
+
+2013-08-20 Siddhesh Poyarekar <[email protected]>
+
+ * string/strcoll_l.c (coll_seq): New structure.
+ (get_next_seq_cached): New function.
+ (get_next_seq): New function.
+ (do_compare): New function.
+ (STRCOLL): Use GNU style definition. Simplify implementation
+ by using get_next_seq, get_next_seq_cached and do_compare.
+
+--- a/string/Makefile
++++ b/string/Makefile
+@@ -67,6 +67,8 @@
+ str-two-way.h
+
+
++xtests = tst-strcoll-overflow
++
+ include ../Rules
+
+
+--- a/string/strcoll_l.c
++++ b/string/strcoll_l.c
+@@ -26,6 +26,7 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <gnu/option-groups.h>
++#include <sys/param.h>
+
+ #ifndef STRING_TYPE
+ # define STRING_TYPE char
+@@ -43,11 +44,434 @@
+
+ #include "../locale/localeinfo.h"
+
++/* Track status while looking for sequences in a string. */
++typedef struct
++{
++ int len; /* Length of the current sequence. */
++ size_t val; /* Position of the sequence relative to the
++ previous non-ignored sequence. */
++ size_t idxnow; /* Current index in sequences. */
++ size_t idxmax; /* Maximum index in sequences. */
++ size_t idxcnt; /* Current count of indices. */
++ size_t backw; /* Current Backward sequence index. */
++ size_t backw_stop; /* Index where the backward sequences stop. */
++ const USTRING_TYPE *us; /* The string. */
++ int32_t *idxarr; /* Array to cache weight indices. */
++ unsigned char *rulearr; /* Array to cache rules. */
++ unsigned char rule; /* Saved rule for the first sequence. */
++ int32_t idx; /* Index to weight of the current
sequence. */
++ int32_t save_idx; /* Save looked up index of a forward
++ sequence after the last backward
++ sequence. */
++ const USTRING_TYPE *back_us; /* Beginning of the backward sequence.
*/
++} coll_seq;
++
++/* Get next sequence. The weight indices are cached, so we don't need to
++ traverse the string. */
++static void
++get_next_seq_cached (coll_seq *seq, int nrules, int pass,
++ const unsigned char *rulesets,
++ const USTRING_TYPE *weights)
++{
++ size_t val = seq->val = 0;
++ int len = seq->len;
++ size_t backw_stop = seq->backw_stop;
++ size_t backw = seq->backw;
++ size_t idxcnt = seq->idxcnt;
++ size_t idxmax = seq->idxmax;
++ size_t idxnow = seq->idxnow;
++ unsigned char *rulearr = seq->rulearr;
++ int32_t *idxarr = seq->idxarr;
++
++ while (len == 0)
++ {
++ ++val;
++ if (backw_stop != ~0ul)
++ {
++ /* There is something pushed. */
++ if (backw == backw_stop)
++ {
++ /* The last pushed character was handled. Continue
++ with forward characters. */
++ if (idxcnt < idxmax)
++ {
++ idxnow = idxcnt;
++ backw_stop = ~0ul;
++ }
++ else
++ {
++ /* Nothing any more. The backward sequence
++ ended with the last sequence in the string. */
++ idxnow = ~0ul;
++ break;
++ }
++ }
++ else
++ idxnow = --backw;
++ }
++ else
++ {
++ backw_stop = idxcnt;
++
++ while (idxcnt < idxmax)
++ {
++ if ((rulesets[rulearr[idxcnt] * nrules + pass]
++ & sort_backward) == 0)
++ /* No more backward characters to push. */
++ break;
++ ++idxcnt;
++ }
++
++ if (backw_stop == idxcnt)
++ {
++ /* No sequence at all or just one. */
++ if (idxcnt == idxmax)
++ /* Note that LEN is still zero. */
++ break;
++
++ backw_stop = ~0ul;
++ idxnow = idxcnt++;
++ }
++ else
++ /* We pushed backward sequences. */
++ idxnow = backw = idxcnt - 1;
++ }
++ len = weights[idxarr[idxnow]++];
++ }
++
++ /* Update the structure. */
++ seq->val = val;
++ seq->len = len;
++ seq->backw_stop = backw_stop;
++ seq->backw = backw;
++ seq->idxcnt = idxcnt;
++ seq->idxnow = idxnow;
++}
++
++/* Get next sequence. Traverse the string as required. */
++static void
++get_next_seq (coll_seq *seq, int nrules, const unsigned char *rulesets,
++ const USTRING_TYPE *weights, const int32_t *table,
++ const USTRING_TYPE *extra, const int32_t *indirect)
++{
++#include WEIGHT_H
++ size_t val = seq->val = 0;
++ int len = seq->len;
++ size_t backw_stop = seq->backw_stop;
++ size_t backw = seq->backw;
++ size_t idxcnt = seq->idxcnt;
++ size_t idxmax = seq->idxmax;
++ size_t idxnow = seq->idxnow;
++ unsigned char *rulearr = seq->rulearr;
++ int32_t *idxarr = seq->idxarr;
++ const USTRING_TYPE *us = seq->us;
++
++ while (len == 0)
++ {
++ ++val;
++ if (backw_stop != ~0ul)
++ {
++ /* There is something pushed. */
++ if (backw == backw_stop)
++ {
++ /* The last pushed character was handled. Continue
++ with forward characters. */
++ if (idxcnt < idxmax)
++ {
++ idxnow = idxcnt;
++ backw_stop = ~0ul;
++ }
++ else
++ /* Nothing any more. The backward sequence ended with
++ the last sequence in the string. Note that LEN
++ is still zero. */
++ break;
++ }
++ else
++ idxnow = --backw;
++ }
++ else
++ {
++ backw_stop = idxmax;
++
++ while (*us != L('\0'))
++ {
++ int32_t tmp = findidx (&us, -1);
++ rulearr[idxmax] = tmp >> 24;
++ idxarr[idxmax] = tmp & 0xffffff;
++ idxcnt = idxmax++;
++
++ if ((rulesets[rulearr[idxcnt] * nrules]
++ & sort_backward) == 0)
++ /* No more backward characters to push. */
++ break;
++ ++idxcnt;
++ }
++
++ if (backw_stop >= idxcnt)
++ {
++ /* No sequence at all or just one. */
++ if (idxcnt == idxmax || backw_stop > idxcnt)
++ /* Note that LEN is still zero. */
++ break;
++
++ backw_stop = ~0ul;
++ idxnow = idxcnt;
++ }
++ else
++ /* We pushed backward sequences. */
++ idxnow = backw = idxcnt - 1;
++ }
++ len = weights[idxarr[idxnow]++];
++ }
++
++ /* Update the structure. */
++ seq->val = val;
++ seq->len = len;
++ seq->backw_stop = backw_stop;
++ seq->backw = backw;
++ seq->idxcnt = idxcnt;
++ seq->idxmax = idxmax;
++ seq->idxnow = idxnow;
++ seq->us = us;
++}
++
++/* Get next sequence. Traverse the string as required. This function does
not
++ set or use any index or rule cache. */
++static void
++get_next_seq_nocache (coll_seq *seq, int nrules, const unsigned char
*rulesets,
++ const USTRING_TYPE *weights, const int32_t *table,
++ const USTRING_TYPE *extra, const int32_t *indirect,
++ int pass)
++{
++#include WEIGHT_H
++ size_t val = seq->val = 0;
++ int len = seq->len;
++ size_t backw_stop = seq->backw_stop;
++ size_t backw = seq->backw;
++ size_t idxcnt = seq->idxcnt;
++ size_t idxmax = seq->idxmax;
++ int32_t idx = seq->idx;
++ const USTRING_TYPE *us = seq->us;
++
++ while (len == 0)
++ {
++ ++val;
++ if (backw_stop != ~0ul)
++ {
++ /* There is something pushed. */
++ if (backw == backw_stop)
++ {
++ /* The last pushed character was handled. Continue
++ with forward characters. */
++ if (idxcnt < idxmax)
++ {
++ idx = seq->save_idx;
++ backw_stop = ~0ul;
++ }
++ else
++ {
++ /* Nothing anymore. The backward sequence ended with
++ the last sequence in the string. Note that len is
++ still zero. */
++ idx = 0;
++ break;
++ }
++ }
++ else
++ {
++ /* XXX Traverse BACKW sequences from the beginning of
++ BACKW_STOP to get the next sequence. Is ther a quicker way
++ to do this? */
++ size_t i = backw_stop;
++ us = seq->back_us;
++ while (i < backw)
++ {
++ int32_t tmp = findidx (&us, -1);
++ idx = tmp & 0xffffff;
++ i++;
++ }
++ --backw;
++ us = seq->us;
++ }
++ }
++ else
++ {
++ backw_stop = idxmax;
++ int32_t prev_idx = idx;
++
++ while (*us != L('\0'))
++ {
++ int32_t tmp = findidx (&us, -1);
++ unsigned char rule = tmp >> 24;
++ prev_idx = idx;
++ idx = tmp & 0xffffff;
++ idxcnt = idxmax++;
++
++ /* Save the rule for the first sequence. */
++ if (__glibc_unlikely (idxcnt == 0))
++ seq->rule = rule;
++
++ if ((rulesets[rule * nrules + pass]
++ & sort_backward) == 0)
++ /* No more backward characters to push. */
++ break;
++ ++idxcnt;
++ }
++
++ if (backw_stop >= idxcnt)
++ {
++ /* No sequence at all or just one. */
++ if (idxcnt == idxmax || backw_stop > idxcnt)
++ /* Note that len is still zero. */
++ break;
++
++ backw_stop = ~0ul;
++ }
++ else
++ {
++ /* We pushed backward sequences. If the stream ended with the
++ backward sequence, then we process the last sequence we
++ found. Otherwise we process the sequence before the last
++ one since the last one was a forward sequence. */
++ seq->back_us = seq->us;
++ seq->us = us;
++ backw = idxcnt;
++ if (idxmax > idxcnt)
++ {
++ backw--;
++ seq->save_idx = idx;
++ idx = prev_idx;
++ }
++ if (backw > backw_stop)
++ backw--;
++ }
++ }
++
++ len = weights[idx++];
++ /* Skip over indices of previous levels. */
++ for (int i = 0; i < pass; i++)
++ {
++ idx += len;
++ len = weights[idx];
++ idx++;
++ }
++ }
++
++ /* Update the structure. */
++ seq->val = val;
++ seq->len = len;
++ seq->backw_stop = backw_stop;
++ seq->backw = backw;
++ seq->idxcnt = idxcnt;
++ seq->idxmax = idxmax;
++ seq->us = us;
++ seq->idx = idx;
++}
++
++/* Compare two sequences. This version does not use the index and rules
++ cache. */
++static int
++do_compare_nocache (coll_seq *seq1, coll_seq *seq2, int position,
++ const USTRING_TYPE *weights)
++{
++ int seq1len = seq1->len;
++ int seq2len = seq2->len;
++ size_t val1 = seq1->val;
++ size_t val2 = seq2->val;
++ int idx1 = seq1->idx;
++ int idx2 = seq2->idx;
++ int result = 0;
++
++ /* Test for position if necessary. */
++ if (position && val1 != val2)
++ {
++ result = val1 > val2 ? 1 : -1;
++ goto out;
++ }
++
++ /* Compare the two sequences. */
++ do
++ {
++ if (weights[idx1] != weights[idx2])
++ {
++ /* The sequences differ. */
++ result = weights[idx1] - weights[idx2];
++ goto out;
++ }
++
++ /* Increment the offsets. */
++ ++idx1;
++ ++idx2;
++
++ --seq1len;
++ --seq2len;
++ }
++ while (seq1len > 0 && seq2len > 0);
++
++ if (position && seq1len != seq2len)
++ result = seq1len - seq2len;
++
++out:
++ seq1->len = seq1len;
++ seq2->len = seq2len;
++ seq1->idx = idx1;
++ seq2->idx = idx2;
++ return result;
++}
++
++/* Compare two sequences using the index cache. */
++static int
++do_compare (coll_seq *seq1, coll_seq *seq2, int position,
++ const USTRING_TYPE *weights)
++{
++ int seq1len = seq1->len;
++ int seq2len = seq2->len;
++ size_t val1 = seq1->val;
++ size_t val2 = seq2->val;
++ int32_t *idx1arr = seq1->idxarr;
++ int32_t *idx2arr = seq2->idxarr;
++ int idx1now = seq1->idxnow;
++ int idx2now = seq2->idxnow;
++ int result = 0;
++
++ /* Test for position if necessary. */
++ if (position && val1 != val2)
++ {
++ result = val1 > val2 ? 1 : -1;
++ goto out;
++ }
++
++ /* Compare the two sequences. */
++ do
++ {
++ if (weights[idx1arr[idx1now]] != weights[idx2arr[idx2now]])
++ {
++ /* The sequences differ. */
++ result = weights[idx1arr[idx1now]] - weights[idx2arr[idx2now]];
++ goto out;
++ }
++
++ /* Increment the offsets. */
++ ++idx1arr[idx1now];
++ ++idx2arr[idx2now];
++
++ --seq1len;
++ --seq2len;
++ }
++ while (seq1len > 0 && seq2len > 0);
++
++ if (position && seq1len != seq2len)
++ result = seq1len - seq2len;
++
++out:
++ seq1->len = seq1len;
++ seq2->len = seq2len;
++ return result;
++}
++
+ int
+-STRCOLL (s1, s2, l)
+- const STRING_TYPE *s1;
+- const STRING_TYPE *s2;
+- __locale_t l;
++STRCOLL (const STRING_TYPE *s1, const STRING_TYPE *s2, __locale_t l)
+ {
+ struct __locale_data *current = l->__locales[LC_COLLATE];
+ #if __OPTION_EGLIBC_LOCALE_CODE
+@@ -62,34 +486,6 @@
+ const USTRING_TYPE *weights;
+ const USTRING_TYPE *extra;
+ const int32_t *indirect;
+- uint_fast32_t pass;
+- int result = 0;
+- const USTRING_TYPE *us1;
+- const USTRING_TYPE *us2;
+- size_t s1len;
+- size_t s2len;
+- int32_t *idx1arr;
+- int32_t *idx2arr;
+- unsigned char *rule1arr;
+- unsigned char *rule2arr;
+- size_t idx1max;
+- size_t idx2max;
+- size_t idx1cnt;
+- size_t idx2cnt;
+- size_t idx1now;
+- size_t idx2now;
+- size_t backw1_stop;
+- size_t backw2_stop;
+- size_t backw1;
+- size_t backw2;
+- int val1;
+- int val2;
+- int position;
+- int seq1len;
+- int seq2len;
+- int use_malloc;
+-
+-#include WEIGHT_H
+
+ if (nrules == 0)
+ return STRCMP (s1, s2);
+@@ -104,7 +500,6 @@
+ current->values[_NL_ITEM_INDEX (CONCAT(_NL_COLLATE_EXTRA,SUFFIX))].string;
+ indirect = (const int32_t *)
+ current->values[_NL_ITEM_INDEX
(CONCAT(_NL_COLLATE_INDIRECT,SUFFIX))].string;
+- use_malloc = 0;
+
+ assert (((uintptr_t) table) % __alignof__ (table[0]) == 0);
+ assert (((uintptr_t) weights) % __alignof__ (weights[0]) == 0);
+@@ -112,18 +507,13 @@
+ assert (((uintptr_t) indirect) % __alignof__ (indirect[0]) == 0);
+
+ /* We need this a few times. */
+- s1len = STRLEN (s1);
+- s2len = STRLEN (s2);
++ size_t s1len = STRLEN (s1);
++ size_t s2len = STRLEN (s2);
+
+ /* Catch empty strings. */
+- if (__builtin_expect (s1len == 0, 0) || __builtin_expect (s2len == 0, 0))
++ if (__glibc_unlikely (s1len == 0) || __glibc_unlikely (s2len == 0))
+ return (s1len != 0) - (s2len != 0);
+
+- /* We need the elements of the strings as unsigned values since they
+- are used as indeces. */
+- us1 = (const USTRING_TYPE *) s1;
+- us2 = (const USTRING_TYPE *) s2;
+-
+ /* Perform the first pass over the string and while doing this find
+ and store the weights for each character. Since we want this to
+ be as fast as possible we are using `alloca' to store the temporary
+@@ -133,411 +523,122 @@
+
+ Please note that the localedef programs makes sure that `position'
+ is not used at the first level. */
+- if (! __libc_use_alloca ((s1len + s2len) * (sizeof (int32_t) + 1)))
+- {
+- idx1arr = (int32_t *) malloc ((s1len + s2len) * (sizeof (int32_t) + 1));
+- idx2arr = &idx1arr[s1len];
+- rule1arr = (unsigned char *) &idx2arr[s2len];
+- rule2arr = &rule1arr[s1len];
+
+- if (idx1arr == NULL)
+- /* No memory. Well, go with the stack then.
++ coll_seq seq1, seq2;
++ bool use_malloc = false;
++ int result = 0;
+
+- XXX Once this implementation is stable we will handle this
+- differently. Instead of precomputing the indeces we will
+- do this in time. This means, though, that this happens for
+- every pass again. */
+- goto try_stack;
+- use_malloc = 1;
+- }
+- else
++ memset (&seq1, 0, sizeof (seq1));
++ seq2 = seq1;
++
++ size_t size_max = SIZE_MAX / (sizeof (int32_t) + 1);
++
++ if (MIN (s1len, s2len) > size_max
++ || MAX (s1len, s2len) > size_max - MIN (s1len, s2len))
+ {
+- try_stack:
+- idx1arr = (int32_t *) alloca (s1len * sizeof (int32_t));
+- idx2arr = (int32_t *) alloca (s2len * sizeof (int32_t));
+- rule1arr = (unsigned char *) alloca (s1len);
+- rule2arr = (unsigned char *) alloca (s2len);
++ /* If the strings are long enough to cause overflow in the size request,
++ then skip the allocation and proceed with the non-cached routines.
*/
+ }
+-
+- idx1cnt = 0;
+- idx2cnt = 0;
+- idx1max = 0;
+- idx2max = 0;
+- idx1now = 0;
+- idx2now = 0;
+- backw1_stop = ~0ul;
+- backw2_stop = ~0ul;
+- backw1 = ~0ul;
+- backw2 = ~0ul;
+- seq1len = 0;
+- seq2len = 0;
+- position = rulesets[0] & sort_position;
+- while (1)
++ else if (! __libc_use_alloca ((s1len + s2len) * (sizeof (int32_t) + 1)))
+ {
+- val1 = 0;
+- val2 = 0;
+-
+- /* Get the next non-IGNOREd element for string `s1'. */
+- if (seq1len == 0)
+- do
+- {
+- ++val1;
+-
+- if (backw1_stop != ~0ul)
+- {
+- /* The is something pushed. */
+- if (backw1 == backw1_stop)
+- {
+- /* The last pushed character was handled. Continue
+- with forward characters. */
+- if (idx1cnt < idx1max)
+- {
+- idx1now = idx1cnt;
+- backw1_stop = ~0ul;
+- }
+- else
+- /* Nothing anymore. The backward sequence ended with
+- the last sequence in the string. Note that seq1len
+- is still zero. */
+- break;
+- }
+- else
+- idx1now = --backw1;
+- }
+- else
+- {
+- backw1_stop = idx1max;
+-
+- while (*us1 != L('\0'))
+- {
+- int32_t tmp = findidx (&us1, -1);
+- rule1arr[idx1max] = tmp >> 24;
+- idx1arr[idx1max] = tmp & 0xffffff;
+- idx1cnt = idx1max++;
+-
+- if ((rulesets[rule1arr[idx1cnt] * nrules]
+- & sort_backward) == 0)
+- /* No more backward characters to push. */
+- break;
+- ++idx1cnt;
+- }
+-
+- if (backw1_stop >= idx1cnt)
+- {
+- /* No sequence at all or just one. */
+- if (idx1cnt == idx1max || backw1_stop > idx1cnt)
+- /* Note that seq1len is still zero. */
+- break;
+-
+- backw1_stop = ~0ul;
+- idx1now = idx1cnt;
+- }
+- else
+- /* We pushed backward sequences. */
+- idx1now = backw1 = idx1cnt - 1;
+- }
+- }
+- while ((seq1len = weights[idx1arr[idx1now]++]) == 0);
+-
+- /* And the same for string `s2'. */
+- if (seq2len == 0)
+- do
+- {
+- ++val2;
+-
+- if (backw2_stop != ~0ul)
+- {
+- /* The is something pushed. */
+- if (backw2 == backw2_stop)
+- {
+- /* The last pushed character was handled. Continue
+- with forward characters. */
+- if (idx2cnt < idx2max)
+- {
+- idx2now = idx2cnt;
+- backw2_stop = ~0ul;
+- }
+- else
+- /* Nothing anymore. The backward sequence ended with
+- the last sequence in the string. Note that seq2len
+- is still zero. */
+- break;
+- }
+- else
+- idx2now = --backw2;
+- }
+- else
+- {
+- backw2_stop = idx2max;
+-
+- while (*us2 != L('\0'))
+- {
+- int32_t tmp = findidx (&us2, -1);
+- rule2arr[idx2max] = tmp >> 24;
+- idx2arr[idx2max] = tmp & 0xffffff;
+- idx2cnt = idx2max++;
+-
+- if ((rulesets[rule2arr[idx2cnt] * nrules]
+- & sort_backward) == 0)
+- /* No more backward characters to push. */
+- break;
+- ++idx2cnt;
+- }
+-
+- if (backw2_stop >= idx2cnt)
+- {
+- /* No sequence at all or just one. */
+- if (idx2cnt == idx2max || backw2_stop > idx2cnt)
+- /* Note that seq1len is still zero. */
+- break;
+-
+- backw2_stop = ~0ul;
+- idx2now = idx2cnt;
+- }
+- else
+- /* We pushed backward sequences. */
+- idx2now = backw2 = idx2cnt - 1;
+- }
+- }
+- while ((seq2len = weights[idx2arr[idx2now]++]) == 0);
+-
+- /* See whether any or both strings are empty. */
+- if (seq1len == 0 || seq2len == 0)
+- {
+- if (seq1len == seq2len)
+- /* Both ended. So far so good, both strings are equal at the
+- first level. */
+- break;
+-
+- /* This means one string is shorter than the other. Find out
+- which one and return an appropriate value. */
+- result = seq1len == 0 ? -1 : 1;
+- goto free_and_return;
+- }
++ seq1.idxarr = (int32_t *) malloc ((s1len + s2len) * (sizeof (int32_t) +
1));
+
+- /* Test for position if necessary. */
+- if (position && val1 != val2)
++ /* If we failed to allocate memory, we leave everything as NULL so that
++ we use the nocache version of traversal and comparison functions. */
++ if (seq1.idxarr != NULL)
+ {
+- result = val1 - val2;
+- goto free_and_return;
++ seq2.idxarr = &seq1.idxarr[s1len];
++ seq1.rulearr = (unsigned char *) &seq2.idxarr[s2len];
++ seq2.rulearr = &seq1.rulearr[s1len];
++ use_malloc = true;
+ }
++ }
++ else
++ {
++ seq1.idxarr = (int32_t *) alloca (s1len * sizeof (int32_t));
++ seq2.idxarr = (int32_t *) alloca (s2len * sizeof (int32_t));
++ seq1.rulearr = (unsigned char *) alloca (s1len);
++ seq2.rulearr = (unsigned char *) alloca (s2len);
++ }
+
+- /* Compare the two sequences. */
+- do
+- {
+- if (weights[idx1arr[idx1now]] != weights[idx2arr[idx2now]])
+- {
+- /* The sequences differ. */
+- result = weights[idx1arr[idx1now]] - weights[idx2arr[idx2now]];
+- goto free_and_return;
+- }
+-
+- /* Increment the offsets. */
+- ++idx1arr[idx1now];
+- ++idx2arr[idx2now];
++ int rule = 0;
+
+- --seq1len;
+- --seq2len;
+- }
+- while (seq1len > 0 && seq2len > 0);
++ /* Cache values in the first pass and if needed, use them in subsequent
++ passes. */
++ for (int pass = 0; pass < nrules; ++pass)
++ {
++ seq1.idxcnt = 0;
++ seq1.idx = 0;
++ seq2.idx = 0;
++ seq1.backw_stop = ~0ul;
++ seq1.backw = ~0ul;
++ seq2.idxcnt = 0;
++ seq2.backw_stop = ~0ul;
++ seq2.backw = ~0ul;
+
+- if (position && seq1len != seq2len)
+- {
+- result = seq1len - seq2len;
+- goto free_and_return;
+- }
+- }
++ /* We need the elements of the strings as unsigned values since they
++ are used as indices. */
++ seq1.us = (const USTRING_TYPE *) s1;
++ seq2.us = (const USTRING_TYPE *) s2;
+
+- /* Now the remaining passes over the weights. We now use the
+- indeces we found before. */
+- for (pass = 1; pass < nrules; ++pass)
+- {
+ /* We assume that if a rule has defined `position' in one section
+ this is true for all of them. */
+- idx1cnt = 0;
+- idx2cnt = 0;
+- backw1_stop = ~0ul;
+- backw2_stop = ~0ul;
+- backw1 = ~0ul;
+- backw2 = ~0ul;
+- position = rulesets[rule1arr[0] * nrules + pass] & sort_position;
++ int position = rulesets[rule * nrules + pass] & sort_position;
+
+ while (1)
+ {
+- val1 = 0;
+- val2 = 0;
+-
+- /* Get the next non-IGNOREd element for string `s1'. */
+- if (seq1len == 0)
+- do
+- {
+- ++val1;
+-
+- if (backw1_stop != ~0ul)
+- {
+- /* The is something pushed. */
+- if (backw1 == backw1_stop)
+- {
+- /* The last pushed character was handled. Continue
+- with forward characters. */
+- if (idx1cnt < idx1max)
+- {
+- idx1now = idx1cnt;
+- backw1_stop = ~0ul;
+- }
+- else
+- {
+- /* Nothing anymore. The backward sequence
+- ended with the last sequence in the string. */
+- idx1now = ~0ul;
+- break;
+- }
+- }
+- else
+- idx1now = --backw1;
+- }
+- else
+- {
+- backw1_stop = idx1cnt;
+-
+- while (idx1cnt < idx1max)
+- {
+- if ((rulesets[rule1arr[idx1cnt] * nrules + pass]
+- & sort_backward) == 0)
+- /* No more backward characters to push. */
+- break;
+- ++idx1cnt;
+- }
+-
+- if (backw1_stop == idx1cnt)
+- {
+- /* No sequence at all or just one. */
+- if (idx1cnt == idx1max)
+- /* Note that seq1len is still zero. */
+- break;
+-
+- backw1_stop = ~0ul;
+- idx1now = idx1cnt++;
+- }
+- else
+- /* We pushed backward sequences. */
+- idx1now = backw1 = idx1cnt - 1;
+- }
+- }
+- while ((seq1len = weights[idx1arr[idx1now]++]) == 0);
+-
+- /* And the same for string `s2'. */
+- if (seq2len == 0)
+- do
+- {
+- ++val2;
+-
+- if (backw2_stop != ~0ul)
+- {
+- /* The is something pushed. */
+- if (backw2 == backw2_stop)
+- {
+- /* The last pushed character was handled. Continue
+- with forward characters. */
+- if (idx2cnt < idx2max)
+- {
+- idx2now = idx2cnt;
+- backw2_stop = ~0ul;
+- }
+- else
+- {
+- /* Nothing anymore. The backward sequence
+- ended with the last sequence in the string. */
+- idx2now = ~0ul;
+- break;
+- }
+- }
+- else
+- idx2now = --backw2;
+- }
+- else
+- {
+- backw2_stop = idx2cnt;
+-
+- while (idx2cnt < idx2max)
+- {
+- if ((rulesets[rule2arr[idx2cnt] * nrules + pass]
+- & sort_backward) == 0)
+- /* No more backward characters to push. */
+- break;
+- ++idx2cnt;
+- }
+-
+- if (backw2_stop == idx2cnt)
+- {
+- /* No sequence at all or just one. */
+- if (idx2cnt == idx2max)
+- /* Note that seq2len is still zero. */
+- break;
+-
+- backw2_stop = ~0ul;
+- idx2now = idx2cnt++;
+- }
+- else
+- /* We pushed backward sequences. */
+- idx2now = backw2 = idx2cnt - 1;
+- }
+- }
+- while ((seq2len = weights[idx2arr[idx2now]++]) == 0);
++ if (__glibc_unlikely (seq1.idxarr == NULL))
++ {
++ get_next_seq_nocache (&seq1, nrules, rulesets, weights, table,
++ extra, indirect, pass);
++ get_next_seq_nocache (&seq2, nrules, rulesets, weights, table,
++ extra, indirect, pass);
++ }
++ else if (pass == 0)
++ {
++ get_next_seq (&seq1, nrules, rulesets, weights, table, extra,
++ indirect);
++ get_next_seq (&seq2, nrules, rulesets, weights, table, extra,
++ indirect);
++ }
++ else
++ {
++ get_next_seq_cached (&seq1, nrules, pass, rulesets, weights);
++ get_next_seq_cached (&seq2, nrules, pass, rulesets, weights);
++ }
+
+ /* See whether any or both strings are empty. */
+- if (seq1len == 0 || seq2len == 0)
++ if (seq1.len == 0 || seq2.len == 0)
+ {
+- if (seq1len == seq2len)
++ if (seq1.len == seq2.len)
+ /* Both ended. So far so good, both strings are equal
+ at this level. */
+ break;
+
+ /* This means one string is shorter than the other. Find out
+ which one and return an appropriate value. */
+- result = seq1len == 0 ? -1 : 1;
+- goto free_and_return;
+- }
+-
+- /* Test for position if necessary. */
+- if (position && val1 != val2)
+- {
+- result = val1 - val2;
++ result = seq1.len == 0 ? -1 : 1;
+ goto free_and_return;
+ }
+
+- /* Compare the two sequences. */
+- do
+- {
+- if (weights[idx1arr[idx1now]] != weights[idx2arr[idx2now]])
+- {
+- /* The sequences differ. */
+- result = (weights[idx1arr[idx1now]]
+- - weights[idx2arr[idx2now]]);
+- goto free_and_return;
+- }
+-
+- /* Increment the offsets. */
+- ++idx1arr[idx1now];
+- ++idx2arr[idx2now];
+-
+- --seq1len;
+- --seq2len;
+- }
+- while (seq1len > 0 && seq2len > 0);
+-
+- if (position && seq1len != seq2len)
+- {
+- result = seq1len - seq2len;
+- goto free_and_return;
+- }
++ if (__glibc_unlikely (seq1.idxarr == NULL))
++ result = do_compare_nocache (&seq1, &seq2, position, weights);
++ else
++ result = do_compare (&seq1, &seq2, position, weights);
++ if (result != 0)
++ goto free_and_return;
+ }
++
++ if (__builtin_expect ((seq1.rulearr != NULL), 1))
++ rule = seq1.rulearr[0];
++ else
++ rule = seq1.rule;
+ }
+
+ /* Free the memory if needed. */
+ free_and_return:
+ if (use_malloc)
+- free (idx1arr);
++ free (seq1.idxarr);
+
+ return result;
+ }
+--- a/string/tst-strcoll-overflow.c
++++ b/string/tst-strcoll-overflow.c
+@@ -0,0 +1,61 @@
++/* Copyright (C) 2013 Free Software Foundation, Inc.
++ This file is part of the GNU C Library.
++
++ The GNU C Library is free software; you can redistribute it and/or
++ modify it under the terms of the GNU Lesser General Public
++ License as published by the Free Software Foundation; either
++ version 2.1 of the License, or (at your option) any later version.
++
++ The GNU C Library is distributed in the hope that it will be useful,
++ but WITHOUT ANY WARRANTY; without even the implied warranty of
++ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
++ Lesser General Public License for more details.
++
++ You should have received a copy of the GNU Lesser General Public
++ License along with the GNU C Library; if not, see
++ <http://www.gnu.org/licenses/>. */
++
++#include <locale.h>
++#include <stdio.h>
++#include <stdint.h>
++#include <stdlib.h>
++#include <string.h>
++
++/* Verify that strcoll does not crash for large strings for which it cannot
++ cache weight lookup results. The size is large enough to cause integer
++ overflows on 32-bit as well as buffer overflows on 64-bit. The test should
++ work reasonably reliably when overcommit is disabled, but it obviously
++ depends on how much memory the system has. There's a limitation to this
++ test in that it does not run to completion. Actually collating such a
++ large string can take days and we can't have xcheck running that long. For
++ that reason, we run the test for about 5 minutes and then assume that
++ everything is fine if there are no crashes. */
++#define SIZE 0x40000000ul
++
++int
++do_test (void)
++{
++ if (setlocale (LC_COLLATE, "en_GB.UTF-8") == NULL)
++ {
++ puts ("setlocale failed, cannot test for overflow");
++ return 0;
++ }
++
++ char *p = malloc (SIZE);
++
++ if (p == NULL)
++ {
++ puts ("could not allocate memory");
++ return 1;
++ }
++
++ memset (p, 'x', SIZE - 1);
++ p[SIZE - 1] = 0;
++ printf ("%d\n", strcoll (p, p));
++ return 0;
++}
++
++#define TIMEOUT 300
++#define EXPECTED_SIGNAL SIGALRM
++#define TEST_FUNCTION do_test ()
++#include "../test-skeleton.c"
Modified: glibc-package/branches/glibc-branch-wheezy/debian/patches/series
===================================================================
--- glibc-package/branches/glibc-branch-wheezy/debian/patches/series
2013-11-29 21:16:51 UTC (rev 5820)
+++ glibc-package/branches/glibc-branch-wheezy/debian/patches/series
2013-11-29 21:37:04 UTC (rev 5821)
@@ -374,3 +374,4 @@
any/cvs-strtod-overflow.diff
any/cvs-arch-lowlevellock.diff
any/local-tst-eintr1-eagain.diff
+any/cvs-CVE-2012-44xx.diff
--
To UNSUBSCRIBE, email to [email protected]
with a subject of "unsubscribe". Trouble? Contact [email protected]
Archive: http://lists.debian.org/[email protected]
