NULL Pointer Dereference Affecting kernel-tools package, versions <0:3.10.0-229.el7


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.1% (29th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELTOOLS-5035130
  • published26 Jul 2021
  • disclosed20 Dec 2013

Introduced: 20 Dec 2013

CVE-2014-8173  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade RHEL:7 kernel-tools to version 0:3.10.0-229.el7 or higher.
This issue was patched in RHSA-2015:0290.

NVD Description

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

The pmd_none_or_trans_huge_or_clear_bad function in include/asm-generic/pgtable.h in the Linux kernel before 3.13 on NUMA systems does not properly determine whether a Page Middle Directory (PMD) entry is a transparent huge-table entry, which allows local users to cause a denial of service (NULL pointer dereference and system crash) or possibly have unspecified other impact via a crafted MADV_WILLNEED madvise system call that leverages the absence of a page-table lock.

CVSS Base Scores

version 3.1