diff options
| -rw-r--r-- | ChangeLog | 1 | ||||
| -rw-r--r-- | nscd/connections.c | 7 |
2 files changed, 7 insertions, 1 deletions
@@ -1,6 +1,7 @@ 2007-10-06 Ulrich Drepper <drepper@redhat.com> * nscd/nscd_helper.c (__nscd_cache_search): Prevent endless loops. + * nscd/connections.c (verify_persistent_db): Recognize circular lists. [BZ #4407] * sysdeps/ieee754/dbl-64/e_lgamma_r.c: Fix *signgamp for -0.0. diff --git a/nscd/connections.c b/nscd/connections.c index 0687a26..2572a42 100644 --- a/nscd/connections.c +++ b/nscd/connections.c @@ -378,7 +378,8 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr) nscd_ssize_t he_cnt = 0; for (nscd_ssize_t cnt = 0; cnt < head->module; ++cnt) { - ref_t work = head->array[cnt]; + ref_t first = head->array[cnt]; + ref_t work = first; while (work != ENDREF) { @@ -437,6 +438,10 @@ verify_persistent_db (void *mem, struct database_pers_head *readhead, int dbnr) } work = here->next; + + if (work == first) + /* A circular list, this must not happen. */ + goto fail; } } |