net: rtm_to_ifaddr: free ifa if ifa_cacheinfo processing fails
[ Upstream commit 446266b0c742a2c9ee8f0dce759a0117bce58a86 ]
Commit 5c766d642 ("ipv4: introduce address lifetime") leaves the ifa
resource that was allocated via inet_alloc_ifa() unfreed when returning
the function with -EINVAL. Thus, free it first via inet_free_ifa().
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index dfc39d4..9e38217 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -771,7 +771,7 @@
ci = nla_data(tb[IFA_CACHEINFO]);
if (!ci->ifa_valid || ci->ifa_prefered > ci->ifa_valid) {
err = -EINVAL;
- goto errout;
+ goto errout_free;
}
*pvalid_lft = ci->ifa_valid;
*pprefered_lft = ci->ifa_prefered;
@@ -779,6 +779,8 @@
return ifa;
+errout_free:
+ inet_free_ifa(ifa);
errout:
return ERR_PTR(err);
}