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NULL Pointer Dereference Affecting kernel-uek package, versions <0:3.8.13-118.36.1.el7uek

Severity

 Recommended
high

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-ORACLE7-KERNELUEK-2545832
  • published10 Apr 2022
  • disclosed17 May 2019
Report a new vulnerability Found a mistake?

Introduced: 17 May 2019

CVE-2018-7191  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Oracle:7 kernel-uek to version 0:3.8.13-118.36.1.el7uek or higher.
This issue was patched in ELSA-2019-4706.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-uek package and not the kernel-uek package as distributed by Oracle. See How to fix? for Oracle:7 relevant fixed versions and status.

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