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Unchecked Error Condition Affecting kernel-bootwrapper package, versions <0:3.10.0-862.2.3.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-KERNELBOOTWRAPPER-4773442
  • published 26 Jul 2021
  • disclosed 13 Sep 2017
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Introduced: 13 Sep 2017

CVE-2018-1091 Open this link in a new tab
CWE-391 Open this link in a new tab

How to fix?

Upgrade RHEL:7 kernel-bootwrapper to version 0:3.10.0-862.2.3.el7 or higher.
This issue was patched in RHSA-2018:1318.

NVD Description

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

In the flush_tmregs_to_thread function in arch/powerpc/kernel/ptrace.c in the Linux kernel before 4.13.5, a guest kernel crash can be triggered from unprivileged userspace during a core dump on a POWER host due to a missing processor feature check and an erroneous use of transactional memory (TM) instructions in the core dump path, leading to a denial of service.