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authorReshetova, Elena <elena.reshetova@intel.com>2017-07-04 15:53:22 +0300
committerDavid S. Miller <davem@davemloft.net>2017-07-04 22:35:18 +0100
commit850a6212c6fa151076dca045821c75025723bc46 (patch)
tree05ba27bc5946f2af54946666f19f878375bc29ea /net/key
parent88755e9c7c0027fb432ac808326103bc9438d5ea (diff)
downloadlinux-850a6212c6fa151076dca045821c75025723bc46.tar.bz2
net, xfrm: convert xfrm_policy.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/key')
-rw-r--r--net/key/af_key.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c
index edcf1d0f82c8..ca9d3ae665e7 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2177,7 +2177,7 @@ static int pfkey_xfrm_policy2msg(struct sk_buff *skb, const struct xfrm_policy *
}
hdr->sadb_msg_len = size / sizeof(uint64_t);
- hdr->sadb_msg_reserved = atomic_read(&xp->refcnt);
+ hdr->sadb_msg_reserved = refcount_read(&xp->refcnt);
return 0;
}