diff options
Diffstat (limited to 'libre/xtensa-unknown-elf-glibc/glibc-2.17-regexp-matcher-overrun.patch')
| -rw-r--r-- | libre/xtensa-unknown-elf-glibc/glibc-2.17-regexp-matcher-overrun.patch | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/libre/xtensa-unknown-elf-glibc/glibc-2.17-regexp-matcher-overrun.patch b/libre/xtensa-unknown-elf-glibc/glibc-2.17-regexp-matcher-overrun.patch new file mode 100644 index 000000000..b108f9d42 --- /dev/null +++ b/libre/xtensa-unknown-elf-glibc/glibc-2.17-regexp-matcher-overrun.patch @@ -0,0 +1,137 @@ +diff --git a/posix/Makefile b/posix/Makefile +index 88d409f..2cacd21 100644 +--- a/posix/Makefile ++++ b/posix/Makefile +@@ -86,7 +86,7 @@ tests := tstgetopt testfnm runtests runptests \ + tst-rfc3484-3 \ + tst-getaddrinfo3 tst-fnmatch2 tst-cpucount tst-cpuset \ + bug-getopt1 bug-getopt2 bug-getopt3 bug-getopt4 \ +- bug-getopt5 tst-getopt_long1 ++ bug-getopt5 tst-getopt_long1 bug-regex34 + xtests := bug-ga2 + ifeq (yes,$(build-shared)) + test-srcs := globtest +@@ -199,5 +199,6 @@ bug-regex26-ENV = LOCPATH=$(common-objpfx)localedata + bug-regex30-ENV = LOCPATH=$(common-objpfx)localedata + bug-regex32-ENV = LOCPATH=$(common-objpfx)localedata + bug-regex33-ENV = LOCPATH=$(common-objpfx)localedata ++bug-regex34-ENV = LOCPATH=$(common-objpfx)localedata + tst-rxspencer-ARGS = --utf8 rxspencer/tests + tst-rxspencer-ENV = LOCPATH=$(common-objpfx)localedata +diff --git a/posix/bug-regex34.c b/posix/bug-regex34.c +new file mode 100644 +index 0000000..bb3b613 +--- /dev/null ++++ b/posix/bug-regex34.c +@@ -0,0 +1,46 @@ ++/* Test re_search with multi-byte characters in UTF-8. ++ 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/>. */ ++ ++#define _GNU_SOURCE 1 ++#include <stdio.h> ++#include <string.h> ++#include <locale.h> ++#include <regex.h> ++ ++static int ++do_test (void) ++{ ++ struct re_pattern_buffer r; ++ /* áá»á½ááºá¯ááºx */ ++ const char *s = "\xe1\x80\x80\xe1\x80\xbb\xe1\x80\xbd\xe1\x80\x94\xe1\x80\xba\xe1\x80\xaf\xe1\x80\x95\xe1\x80\xbax"; ++ ++ if (setlocale (LC_ALL, "en_US.UTF-8") == NULL) ++ { ++ puts ("setlocale failed"); ++ return 1; ++ } ++ memset (&r, 0, sizeof (r)); ++ ++ re_compile_pattern ("[^x]x", 5, &r); ++ /* This was triggering a buffer overflow. */ ++ re_search (&r, s, strlen (s), 0, strlen (s), 0); ++ return 0; ++} ++ ++#define TEST_FUNCTION do_test () ++#include "../test-skeleton.c" +diff --git a/posix/regexec.c b/posix/regexec.c +index 7f2de85..5ca2bf6 100644 +--- a/posix/regexec.c ++++ b/posix/regexec.c +@@ -197,7 +197,7 @@ static int group_nodes_into_DFAstates (const re_dfa_t *dfa, + static int check_node_accept (const re_match_context_t *mctx, + const re_token_t *node, int idx) + internal_function; +-static reg_errcode_t extend_buffers (re_match_context_t *mctx) ++static reg_errcode_t extend_buffers (re_match_context_t *mctx, int min_len) + internal_function; + + /* Entry point for POSIX code. */ +@@ -1160,7 +1160,7 @@ check_matching (re_match_context_t *mctx, int fl_longest_match, + || (BE (next_char_idx >= mctx->input.valid_len, 0) + && mctx->input.valid_len < mctx->input.len)) + { +- err = extend_buffers (mctx); ++ err = extend_buffers (mctx, next_char_idx + 1); + if (BE (err != REG_NOERROR, 0)) + { + assert (err == REG_ESPACE); +@@ -1738,7 +1738,7 @@ clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx) + && mctx->input.valid_len < mctx->input.len)) + { + reg_errcode_t err; +- err = extend_buffers (mctx); ++ err = extend_buffers (mctx, next_state_log_idx + 1); + if (BE (err != REG_NOERROR, 0)) + return err; + } +@@ -2792,7 +2792,7 @@ get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx) + if (bkref_str_off >= mctx->input.len) + break; + +- err = extend_buffers (mctx); ++ err = extend_buffers (mctx, bkref_str_off + 1); + if (BE (err != REG_NOERROR, 0)) + return err; + +@@ -4102,7 +4102,7 @@ check_node_accept (const re_match_context_t *mctx, const re_token_t *node, + + static reg_errcode_t + internal_function __attribute_warn_unused_result__ +-extend_buffers (re_match_context_t *mctx) ++extend_buffers (re_match_context_t *mctx, int min_len) + { + reg_errcode_t ret; + re_string_t *pstr = &mctx->input; +@@ -4111,8 +4111,10 @@ extend_buffers (re_match_context_t *mctx) + if (BE (INT_MAX / 2 / sizeof (re_dfastate_t *) <= pstr->bufs_len, 0)) + return REG_ESPACE; + +- /* Double the lengthes of the buffers. */ +- ret = re_string_realloc_buffers (pstr, MIN (pstr->len, pstr->bufs_len * 2)); ++ /* Double the lengthes of the buffers, but allocate at least MIN_LEN. */ ++ ret = re_string_realloc_buffers (pstr, ++ MAX (min_len, ++ MIN (pstr->len, pstr->bufs_len * 2))); + if (BE (ret != REG_NOERROR, 0)) + return ret; + +-- +1.7.1 + |