NULL Pointer Dereference Affecting kernel package, versions <0:5.15.73-45.135.amzn2022


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.17% (55th percentile)

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  • Snyk IDSNYK-AMZN2022-KERNEL-3102963
  • published4 Nov 2022
  • disclosed2 Jun 2022

Introduced: 2 Jun 2022

CVE-2022-1789  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2022 kernel to version 0:5.15.73-45.135.amzn2022 or higher.
This issue was patched in ALAS2022-2022-185.

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:2022 relevant fixed versions and status.

With shadow paging enabled, the INVPCID instruction results in a call to kvm_mmu_invpcid_gva. If INVPCID is executed with CR0.PG=0, the invlpg callback is not set and the result is a NULL pointer dereference.

CVSS Scores

version 3.1