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CVE-2018-7191

Good to know:

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Date: May 16, 2019

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.

Language: C

Severity Score

Related Resources (15)

https://github.com/torvalds/linux/commit/5c25f65fd1e42685f7ccd80e0621829c105785d9
https://nvd.nist.gov/vuln/detail/CVE-2018-7191
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00039.html
https://github.com/torvalds/linux/commit/0ad646c81b2182f7fa67ec0c8c825e0ee165696d
http://www.securityfocus.com/bid/108380
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748846
https://access.redhat.com/security/cve/CVE-2018-7191
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00048.html
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=0ad646c81b2182f7fa67ec0c8c825e0ee165696d
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1743792
https://people.canonical.com/~ubuntu-security/cve/CVE-2018-7191
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=5c25f65fd1e42685f7ccd80e0621829c105785d9
http://lists.opensuse.org/opensuse-security-announce/2019-05/msg00071.html
https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.14
https://www.mend.io/vulnerability-database/CVE-2018-7191

Severity Score

Weakness Type (CWE)

NULL Pointer Dereference

CWE-476

Top Fix

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Upgrade Version

Upgrade to version linux-yocto - 4.8.24+gitAUTOINC+c84532b647_f6329fd287;linux-yocto - 4.10+gitAUTOINC+805ea440c7_b259a5d744

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CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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