Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux Kernel | < 4.13.14 |
Related Weaknesses (CWE)
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/1743792ExploitThird Party Advisory
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846PatchThird Party Advisory
- https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14Release NotesVendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad64PatchThird Party AdvisoryVendor Advisory
- https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25fPatchVendor Advisory
- https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696PatchThird Party Advisory
- https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785dPatchThird 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
FAQ
What is CVE-2018-7191?
CVE-2018-7191 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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 ...
How severe is CVE-2018-7191?
CVE-2018-7191 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2018-7191?
Check the references section above for vendor advisories and patch information. Affected products include: Linux Linux Kernel.