Description

In the tun subsystem in the Linux kernel before 4.13.14, dev_get_valid_name is not called before register_netdevice. This allows local users to cause a denial of service (NULL pointer dereference and panic) via an ioctl(TUNSETIFF) call with a dev name containing a / character. This is similar to CVE-2013-4343.

References

http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html

http://www.securityfocus.com/bid/108380

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743792

https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846

https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696d

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9

https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696d

https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9

Details

Risk Information

CVSS v2

CVSS v3