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-rw-r--r--net/netlink/attr.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/netlink/attr.c b/net/netlink/attr.c
index c591212793ee..e4d7bed99c2e 100644
--- a/net/netlink/attr.c
+++ b/net/netlink/attr.c
@@ -72,6 +72,17 @@ static int validate_nla(struct nlattr *nla, int maxtype,
72 return -ERANGE; 72 return -ERANGE;
73 break; 73 break;
74 74
75 case NLA_NESTED_COMPAT:
76 if (attrlen < pt->len)
77 return -ERANGE;
78 if (attrlen < NLA_ALIGN(pt->len))
79 break;
80 if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN)
81 return -ERANGE;
82 nla = nla_data(nla) + NLA_ALIGN(pt->len);
83 if (attrlen < NLA_ALIGN(pt->len) + NLA_HDRLEN + nla_len(nla))
84 return -ERANGE;
85 break;
75 default: 86 default:
76 if (pt->len) 87 if (pt->len)
77 minlen = pt->len; 88 minlen = pt->len;