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Off-by-one Error Affecting kernel-rt package, versions <0:3.10.0-514.16.1.rt56.437.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.06% (29th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-5157008
  • published 26 Jul 2021
  • disclosed 16 Feb 2017
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Introduced: 16 Feb 2017

CVE-2017-2618 Open this link in a new tab
CWE-193 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-514.16.1.rt56.437.el7 or higher.
This issue was patched in RHSA-2017:0931.

NVD Description

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

A flaw was found in the Linux kernel's handling of clearing SELinux attributes on /proc/pid/attr files before 4.9.10. An empty (null) write to this file can crash the system by causing the system to attempt to access unmapped kernel memory.