From affa78bc6a204fac1b5ced4f34376f53c70ec0ac Mon Sep 17 00:00:00 2001 From: "Reshetova, Elena" Date: Tue, 4 Jul 2017 09:34:58 +0300 Subject: net, ipv6: convert ifacaddr6.aca_refcnt from atomic_t to refcount_t refcount_t type and corresponding API should be used instead of atomic_t when the variable is used as a reference counter. This allows to avoid accidental refcounter overflows that might lead to use-after-free situations. Signed-off-by: Elena Reshetova Signed-off-by: Hans Liljestrand Signed-off-by: Kees Cook Signed-off-by: David Windsor Signed-off-by: David S. Miller --- include/net/if_inet6.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/net/if_inet6.h b/include/net/if_inet6.h index 4bb52ce634e8..d4088d1a688d 100644 --- a/include/net/if_inet6.h +++ b/include/net/if_inet6.h @@ -147,7 +147,7 @@ struct ifacaddr6 { struct rt6_info *aca_rt; struct ifacaddr6 *aca_next; int aca_users; - atomic_t aca_refcnt; + refcount_t aca_refcnt; unsigned long aca_cstamp; unsigned long aca_tstamp; }; -- cgit v1.2.3