🛡️ CVE-2022-42331 on Debian — xen

⚪ Unknown ✅ No Known Exploit OSV

N/A

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very original Spectre/Meltdown security work (XSA-254), one entrypath performs its speculation-safety actions too late. In some configurations, there is an unprotected RET instruction which can be attacked with a variety of speculative attacks.

Distribution advisory

This page covers CVE-2022-42331 as tracked by Debian, for the package xen. The fix is available in version 4.17.0+74-g3eac216e6e-1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity none, availability none.

Affected software

DEBIAN-CVE-2022-42331 is recorded against 1 package.

xen (fixed in 4.17.0+74-g3eac216e6e-1)

Timeline and source

Published on 21 March 2023 and last revised on 4 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

security-tracker.debian.org (Advisory)

CVE-2022-42331 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Alpine Base record Ubuntu

Details

Severity Unknown

CVSS Score N/A

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

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2023-03-21

Updated 2026-08-12

Modified 2026-08-04

Fix URL N/A

Affected Packages

Software	From version	Fixed in
xen	—	4.17.0+74-g3eac216e6e-1

References

ADVISORY https://security-tracker.debian.org/tracker/CVE-2022-42331

🔗 NVD 🔗 Mitre

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