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Fix read past end of pattern in fnmatch (bug 18032)

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Andreas Schwab 2015-02-26 14:55:24 +01:00
parent 524ae9ea2e
commit 4a28f4d55a
4 changed files with 15 additions and 7 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2015-02-26 Andreas Schwab <schwab@suse.de>
[BZ #18032]
* posix/fnmatch_loop.c (FCT): Remove extra increment when skipping
over collating symbol inside a bracket expression. Minor cleanup.
* posix/tst-fnmatch3.c (do_test): Add test case.
2015-02-26 Joseph Myers <joseph@codesourcery.com> 2015-02-26 Joseph Myers <joseph@codesourcery.com>
[BZ #18029] [BZ #18029]

2
NEWS
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@ -12,7 +12,7 @@ Version 2.22
4719, 14841, 13064, 14094, 15319, 15467, 15790, 15969, 16560, 16783, 4719, 14841, 13064, 14094, 15319, 15467, 15790, 15969, 16560, 16783,
17269, 17523, 17569, 17588, 17792, 17836, 17912, 17916, 17932, 17944, 17269, 17523, 17569, 17588, 17792, 17836, 17912, 17916, 17932, 17944,
17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998, 17949, 17964, 17965, 17967, 17969, 17978, 17987, 17991, 17996, 17998,
17999, 18019, 18020, 18029. 17999, 18019, 18020, 18029, 18032.
* Character encoding and ctype tables were updated to Unicode 7.0.0, using * Character encoding and ctype tables were updated to Unicode 7.0.0, using
new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red

5
posix/fnmatch_loop.c
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@ -945,14 +945,13 @@ FCT (pattern, string, string_end, no_leading_period, flags, ends, alloca_used)
} }
else if (c == L('[') && *p == L('.')) else if (c == L('[') && *p == L('.'))
{ {
++p;
while (1) while (1)
{ {
c = *++p; c = *++p;
if (c == '\0') if (c == L('\0'))
return FNM_NOMATCH; return FNM_NOMATCH;
if (*p == L('.') && p[1] == L(']')) if (c == L('.') && p[1] == L(']'))
break; break;
} }
p += 2; p += 2;

8
posix/tst-fnmatch3.c
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@ -21,9 +21,11 @@
int int
do_test (void) do_test (void)
{ {
const char *pattern = "[[:alpha:]'[:alpha:]\0]"; if (fnmatch ("[[:alpha:]'[:alpha:]\0]", "a", 0) != FNM_NOMATCH)
return 1;
return fnmatch (pattern, "a", 0) != FNM_NOMATCH; if (fnmatch ("[a[.\0.]]", "a", 0) != FNM_NOMATCH)
return 1;
return 0;
} }
#define TEST_FUNCTION do_test () #define TEST_FUNCTION do_test ()