CVE-2018-7191

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.

• CWE-476

• 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/1743792Exploit, Third Party Advisory
• https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846Patch, Third Party Advisory
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696dPatch, Third Party Advisory, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9Patch, Vendor Advisory
• https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696dPatch, Third Party Advisory
• https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9Patch, Third Party Advisory
• 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/1743792Exploit, Third Party Advisory
• https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846Patch, Third Party Advisory
• https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14Release Notes, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696dPatch, Third Party Advisory, Vendor Advisory
• https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9Patch, Vendor Advisory
• https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696dPatch, Third Party Advisory
• https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9Patch, Third Party Advisory

Published

May 17, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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