[NETFILTER]: SNMP NAT: fix memleak in snmp_object_decode

If kmalloc fails, error path leaks data allocated from asn1_oid_decode().

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/netfilter/ip_nat_snmp_basic.c b/net/ipv4/netfilter/ip_nat_snmp_basic.c
index 688a2f2..c332442 100644 (file)
--- a/net/ipv4/netfilter/ip_nat_snmp_basic.c
+++ b/net/ipv4/netfilter/ip_nat_snmp_basic.c
@@ -768,6 +768,7 @@ static unsigned char snmp_object_decode(struct asn1_ctx *ctx,
                        len *= sizeof(unsigned long);
                        *obj = kmalloc(sizeof(struct snmp_object) + len, GFP_ATOMIC);
                        if (*obj == NULL) {
+                               kfree(lp);
                                kfree(id);
                                if (net_ratelimit())
                                        printk("OOM in bsalg (%d)\n", __LINE__);