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-rw-r--r--net/key/af_key.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/net/key/af_key.c b/net/key/af_key.c
index 878039b9557d..26d5e63c4cc5 100644
--- a/net/key/af_key.c
+++ b/net/key/af_key.c
@@ -2784,12 +2784,22 @@ static struct sadb_msg *pfkey_get_base_msg(struct sk_buff *skb, int *errp)
static inline int aalg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
{
- return t->aalgos & (1 << d->desc.sadb_alg_id);
+ unsigned int id = d->desc.sadb_alg_id;
+
+ if (id >= sizeof(t->aalgos) * 8)
+ return 0;
+
+ return (t->aalgos >> id) & 1;
}
static inline int ealg_tmpl_set(struct xfrm_tmpl *t, struct xfrm_algo_desc *d)
{
- return t->ealgos & (1 << d->desc.sadb_alg_id);
+ unsigned int id = d->desc.sadb_alg_id;
+
+ if (id >= sizeof(t->ealgos) * 8)
+ return 0;
+
+ return (t->ealgos >> id) & 1;
}
static int count_ah_combs(struct xfrm_tmpl *t)