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Heap-based Buffer Overflow Affecting kernel-rt-trace-kvm package, versions <0:3.10.0-327.36.1.rt56.237.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.04% (12th percentile)

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  • Snyk IDSNYK-RHEL7-KERNELRTTRACEKVM-5173070
  • published26 Jul 2021
  • disclosed24 Jun 2016
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Introduced: 24 Jun 2016

CVE-2016-4998  (opens in a new tab)
CWE-122  (opens in a new tab)

How to fix?

Upgrade RHEL:7 kernel-rt-trace-kvm to version 0:3.10.0-327.36.1.rt56.237.el7 or higher.
This issue was patched in RHSA-2016:1875.

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 RHEL. See How to fix? for RHEL:7 relevant fixed versions and status.

The IPT_SO_SET_REPLACE setsockopt implementation in the netfilter subsystem in the Linux kernel before 4.6 allows local users to cause a denial of service (out-of-bounds read) or possibly obtain sensitive information from kernel heap memory by leveraging in-container root access to provide a crafted offset value that leads to crossing a ruleset blob boundary.

References