From: Dan Carpenter dan.carpenter@oracle.com
commit 8e4052c32d6b4b39c1e13c652c7e33748d447409 upstream.
The > comparison should be >= to prevent accessing one element beyond the end of the dev->vlans[] array in the caller function, b53_vlan_add(). The "dev->vlans" array is allocated in the b53_switch_init() function and it has "dev->num_vlans" elements.
Fixes: a2482d2ce349 ("net: dsa: b53: Plug in VLAN support") Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Acked-by: Florian Fainelli f.fainelli@gmail.com Link: https://lore.kernel.org/r/YAbxI97Dl/pmBy5V@mwanda Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/net/dsa/b53/b53_common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -1330,7 +1330,7 @@ int b53_vlan_prepare(struct dsa_switch * if ((is5325(dev) || is5365(dev)) && vlan->vid_begin == 0) return -EOPNOTSUPP;
- if (vlan->vid_end > dev->num_vlans) + if (vlan->vid_end >= dev->num_vlans) return -ERANGE;
b53_enable_vlan(dev, true, ds->vlan_filtering);