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| -rw-r--r-- | ChangeLog | 10 | ||||
| -rw-r--r-- | posix/regcomp.c | 2 |
2 files changed, 12 insertions, 0 deletions
@@ -1,3 +1,13 @@ +2014-07-13 Jim Meyering <meyering@fb.com> + + [BZ 17150] + regex: don't deref NULL upon heap allocation failure + * posix/regcomp.c: (parse_dup_op): Handle duplicate_tree + failure in one more place. + To trigger the segfault, configure grep -with-included-regex, + build it, and run these commands: + ( ulimit -v 300000; echo a|src/grep -E a+++++++++++++++++++++ ) + 2014-07-13 Andreas Schwab <schwab@linux-m68k.org> * sysdeps/m68k/m680x0/fpu/libm-test-ulps: Update. diff --git a/posix/regcomp.c b/posix/regcomp.c index 076eca3e7c..8f2747b3c9 100644 --- a/posix/regcomp.c +++ b/posix/regcomp.c @@ -2582,6 +2582,8 @@ parse_dup_op (bin_tree_t *elem, re_string_t *regexp, re_dfa_t *dfa, /* Duplicate ELEM before it is marked optional. */ elem = duplicate_tree (elem, dfa); + if (BE (elem == NULL, 0)) + goto parse_dup_op_espace; old_tree = tree; } else |