vulntracker.iovulntracker.io
© 2026 vulntracker.io

CVE-2022-42331

MEDIUM
5.5
CVSS Score
Published: March 21, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 05:04 AM UTC
2 products affected across 2 vendorsFedoraXen

Using xen by Xen?

Get instant alerts when new vulnerabilities affect xen - before attackers find them.

Real-time alertsTrack your software stackFree plan available
Start FreeSign In
Severity
MEDIUM5.5
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Fedora· Fedora Projectrpm
95%
3738
Xen· Xenwordpress-plugin
95%
4.5.0 ≤ v ≤ 4.17.0
Vendor states this is fixed in consult Xen advisory XSA-429 (unknown)

References (7)

Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/03/21/3
Vendor Advisory
Source: [email protected]
http://xenbits.xen.org/xsa/advisory-429.html
Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5L6PM4RE7MUE6OWA32ZVOXCP235RM2TM/
Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/APBMS2Q6746AXAFAITNJMGBNFGNMVLWR/
Vendor Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202402-07
Vendor AdvisoryThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2023/dsa-5378
Vendor Advisory
Source: [email protected]
https://xenbits.xenproject.org/xsa/advisory-429.txt

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-noinfo

Get alerted

Stop reading CVE feeds looking for your own stack

Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.

Create accountSign in
Free plan, no card