mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

net-sysfs: initialize uid and gid before calling net_ns_get_ownership 

Currently in net_ns_get_ownership() it may not be able to set uid or gid
if make_kuid or make_kgid returns an invalid value, and an uninit-value
issue can be triggered by this.

This patch is to fix it by initializing the uid and gid before calling
net_ns_get_ownership(), as it does in kobject_get_ownership()

Fixes: e6dee9f389 ("net-sysfs: add netdev_change_owner()")
Reported-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2021-10-25 02:31:48 -04:00 committed by David S. Miller
parent 042b2046d0
commit f7a1e76d0f
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
net/core/net-sysfs.c
View File

@ -1973,9 +1973,9 @@ int netdev_register_kobject(struct net_device *ndev)
int netdev_change_owner(struct net_device *ndev, const struct net *net_old,
const struct net *net_new)
{
kuid_t old_uid = GLOBAL_ROOT_UID, new_uid = GLOBAL_ROOT_UID;
kgid_t old_gid = GLOBAL_ROOT_GID, new_gid = GLOBAL_ROOT_GID;
struct device *dev = &ndev->dev;
kuid_t old_uid, new_uid;
kgid_t old_gid, new_gid;
int error;
net_ns_get_ownership(net_old, &old_uid, &old_gid);