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Information Exposure Affecting kernel-rt-trace-kvm package, versions <0:3.10.0-957.10.1.rt56.921.el7

Severity

 Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-CENTOS7-KERNELRTTRACEKVM-2132615
  • published26 Jul 2021
  • disclosed27 Sept 2018
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Introduced: 27 Sep 2018

CVE-2018-17972  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Centos:7 kernel-rt-trace-kvm to version 0:3.10.0-957.10.1.rt56.921.el7 or higher.

NVD Description

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

An issue was discovered in the proc_pid_stack function in fs/proc/base.c in the Linux kernel through 4.18.11. It does not ensure that only root may inspect the kernel stack of an arbitrary task, allowing a local attacker to exploit racy stack unwinding and leak kernel task stack contents.

References