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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2015-10-02 15:00:51 -0400 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2015-10-02 15:00:51 -0400 |
| commit | 2e8cfcf4ea1140213eae56ce64a2c53182643578 (patch) | |
| tree | f7b3cd6a9751343c5eba9338624e0240591384ab /src/backend/utils/adt/like_match.c | |
| parent | b63fc28776c5d2efdb4de326ad0f0b5b88f82220 (diff) | |
| download | postgresql-2e8cfcf4ea1140213eae56ce64a2c53182643578.tar.gz postgresql-2e8cfcf4ea1140213eae56ce64a2c53182643578.zip | |
Add recursion depth protection to LIKE matching.
Since MatchText() recurses, it could in principle be driven to stack
overflow, although quite a long pattern would be needed.
Diffstat (limited to 'src/backend/utils/adt/like_match.c')
| -rw-r--r-- | src/backend/utils/adt/like_match.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/backend/utils/adt/like_match.c b/src/backend/utils/adt/like_match.c index 3ec24872d00..83ece28722c 100644 --- a/src/backend/utils/adt/like_match.c +++ b/src/backend/utils/adt/like_match.c @@ -83,6 +83,9 @@ MatchText(char *t, int tlen, char *p, int plen, if (plen == 1 && *p == '%') return LIKE_TRUE; + /* Since this function recurses, it could be driven to stack overflow */ + check_stack_depth(); + /* * In this loop, we advance by char when matching wildcards (and thus on * recursive entry to this function we are properly char-synced). On other |