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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 09:34:56 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 01:29:04 -0700
commit271201c09c86cd75e0fd6206bde689176e85aa21 (patch)
tree651a50d749adf45a651b8bcc9813dd049aeccffa /net
parent1be9246077f6bb1583f9347c599480621d63c66a (diff)
net, ipv6: convert inet6_ifaddr.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 <elena.reshetova@intel.com> Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com> Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: David Windsor <dwindsor@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/ipv6/addrconf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 2365f1224c6b..3c46e9513a31 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1050,7 +1050,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
ifa->idev = idev;
/* For caller */
- in6_ifa_hold(ifa);
+ refcount_set(&ifa->refcnt, 1);
/* Add to big hash table */
hash = inet6_addr_hash(addr);