CVE-2022-42327

HighCVSS 7.1/10Last modified Jun 17, 2026

Description

x86: unintended memory sharing between guests On Intel systems that support the "virtualize APIC accesses" feature, a guest can read and write the global shared xAPIC page by moving the local APIC out of xAPIC mode. Access to this shared page bypasses the expected isolation that should exist between two guests.

Metrics

CVSS 3.1 7.1/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Weakness enumeration

CWE-284

Affected software

No affected versions have been published.

Timeline

Published: Nov 1, 2022
Last modified: Jun 17, 2026
NVD status: Modified

Related CVEs from 2022

CVE-2022-423285.5Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/v CVE-2022-423295.5Guests can trigger deadlock in Linux netback driver T[his CNA information record relates to multiple CVEs; the text explains which aspects/v CVE-2022-42336.1A vulnerability has been found in SourceCodester Event Registration System 1.0 and classified as problematic. Affected by this vulnerability CVE-2022-423307.5Guests can cause Xenstore crash via soft reset When a guest issues a "Soft Reset" (e.g. for performing a kexec) the libxl based Xen toolstac CVE-2022-423315.5x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one CVE-2022-423327.8x86 shadow plus log-dirty mode use-after-free In environments where host assisted address translation is necessary but Hardware Assisted Pag CVE-2022-423338.6x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerab CVE-2022-423346.5x86/HVM pinned cache attributes mis-handling T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerab CVE-2022-423357.8x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted P CVE-2022-423363.3Mishandling of guest SSBD selection on AMD hardware The current logic to set SSBD on AMD Family 17h and Hygon Family 18h processors requires CVE-2022-423397.8Adobe Acrobat Reader versions 22.002.20212 (and earlier) and 20.005.30381 (and earlier) are affected by a Stack-based Buffer Overflow vulner CVE-2022-42346.1A vulnerability was found in SourceCodester Canteen Management System. It has been rated as problematic. This issue affects the function bui