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NULL Pointer Dereference The advisory has been revoked - it doesn't affect any version of package kernel-headers  (opens in a new tab)

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  • Snyk IDSNYK-RHEL7-KERNELHEADERS-1520247
  • published26 Jul 2021
  • disclosed17 Jan 2018
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Introduced: 17 Jan 2018

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

Amendment

The Red Hat security team deemed this advisory irrelevant for RHEL:7.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-headers package and not the kernel-headers package as distributed by RHEL.

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