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Integer Overflow or Wraparound Affecting kernel-rt package, versions <0:3.10.0-693.5.2.rt56.626.el7

Severity

 Recommended
high

Based on Red Hat Enterprise Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-RHEL7-KERNELRT-4797840
  • published 26 Jul 2021
  • disclosed 19 Jul 2017
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Introduced: 19 Jul 2017

CVE-2017-7542 Open this link in a new tab
CWE-190 Open this link in a new tab
CWE-835 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-rt to version 0:3.10.0-693.5.2.rt56.626.el7 or higher.
This issue was patched in RHSA-2017:2931.

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.

The ip6_find_1stfragopt function in net/ipv6/output_core.c in the Linux kernel through 4.12.3 allows local users to cause a denial of service (integer overflow and infinite loop) by leveraging the ability to open a raw socket.