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NULL Pointer Dereference Affecting kernel package, versions <0:4.14.88-88.73.amzn2

Severity

 Recommended
0.0
medium
0
10

Based on Amazon Linux security rating

    Threat Intelligence

    EPSS
    0.04% (6th percentile)

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  • Snyk ID SNYK-AMZN2-KERNEL-1667671
  • published 27 Sep 2021
  • disclosed 21 Nov 2018
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Introduced: 21 Nov 2018

CVE-2018-19407 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.88-88.73.amzn2 or higher.
This issue was patched in ALAS2-2018-1133.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel package and not the kernel package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

The vcpu_scan_ioapic function in arch/x86/kvm/x86.c in the Linux kernel through 4.19.2 allows local users to cause a denial of service (NULL pointer dereference and BUG) via crafted system calls that reach a situation where ioapic is uninitialized.