3.8.13.12 -stable review patch. If anyone has any objections, please let me know. ------------------ From: Jason Wang <jasowang@xxxxxxxxxx> commit 662ca437e714caaab855b12415d6ffd815985bc0 upstream. Commit c8d68e6be1c3b242f1c598595830890b65cea64a (tuntap: multiqueue support) only call free_netdev() on error in tun_set_iff(). This causes several issues: - memory of tun security were leaked - use after free since the flow gc timer was not deleted and the tfile were not detached This patch solves the above issues. Reported-by: Wannes Rombouts <wannes.rombouts@xxxxxxxxxx> Cc: Michael S. Tsirkin <mst@xxxxxxxxxx> Signed-off-by: Jason Wang <jasowang@xxxxxxxxxx> Acked-by: Michael S. Tsirkin <mst@xxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> [ kamal: 3.8-stable for CVE-2013-4343 ] Cc: Luis Henriques <luis.henriques@xxxxxxxxxxxxx> Signed-off-by: Kamal Mostafa <kamal@xxxxxxxxxxxxx> --- drivers/net/tun.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 441c987..66b4613 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -1686,11 +1686,11 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) INIT_LIST_HEAD(&tun->disabled); err = tun_attach(tun, file); if (err < 0) - goto err_free_dev; + goto err_free_flow; err = register_netdevice(tun->dev); if (err < 0) - goto err_free_dev; + goto err_detach; if (device_create_file(&tun->dev->dev, &dev_attr_tun_flags) || device_create_file(&tun->dev->dev, &dev_attr_owner) || @@ -1734,7 +1734,12 @@ static int tun_set_iff(struct net *net, struct file *file, struct ifreq *ifr) strcpy(ifr->ifr_name, tun->dev->name); return 0; - err_free_dev: +err_detach: + tun_detach_all(dev); +err_free_flow: + tun_flow_uninit(tun); + security_tun_dev_free_security(tun->security); +err_free_dev: free_netdev(dev); return err; } -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html