VulnerabilityModified
CVE-2018-7191
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.
MEDIUM 5.5EPSS 0.65%
Does this matter?
Lower severity and a low EPSS score (0.65%). Track it; it rarely justifies an emergency change on its own.
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 3.0
- 5.5 MEDIUMCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.65% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-476
- Affected
- linux/linux kernel
- Source
- cve@mitre.org
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/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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.