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-rw-r--r--net/netlink/af_netlink.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 393573a99a5a..7d860a22e5fb 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1009,6 +1009,11 @@ static int netlink_bind(struct socket *sock, struct sockaddr *addr,
return err;
}
+ if (nlk->ngroups == 0)
+ groups = 0;
+ else
+ groups &= (1ULL << nlk->ngroups) - 1;
+
bound = nlk->bound;
if (bound) {
/* Ensure nlk->portid is up-to-date. */
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