TI-2022-20547 Aliases CVE-2022-42331 GHSA-f5x9-rprw-5rc4

x86: speculative vulnerability in 32bit SYSCALL path Due to an oversight in the very…

LOW 25Published 2023-03-21 · Updated 2025-02-13

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: High · None · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

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.

Why it matters now

EPSS 0.00276 20th percentileScored 2026-11-08

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Xen	xen	—	—	No fix listed	CNA

xen VendorXen Affected — Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPE	Versions	Role	Vendor
cpe:2.3:o:xen:xen:::::::x86:*	4.5.0 – 4.17.0	Vulnerable	Xen
cpe:2.3:o:fedoraproject:fedora:37:::::::*	37	Vulnerable	Fedoraproject
cpe:2.3:o:fedoraproject:fedora:38:::::::*	38	Vulnerable	Fedoraproject

cpe:2.3:o:xen:xen:*:*:*:*:*:*:x86:* Versions 4.5.0 – 4.17.0 Vulnerable ·Xen
cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* Versions 37 Vulnerable ·Fedoraproject
cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* Versions 38 Vulnerable ·Fedoraproject

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2023-03-21
xen — FEDORA-2023-da8315e641
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2022-20549 Resource allocation without limits in xenPriority MEDIUM 40
- TI-2022-20548 Use after free in xenPriority LOW 36
- TI-2022-20550 Resource allocation without limits in xenPriority LOW 28
Show all 4 records → Advisory →
Advisory · 2023-03-21
xen — FEDORA-2023-703f133eb3
4 records Highest priority Priority MEDIUM 1 MEDIUM, 3 LOW
Other records, highest priority first
- TI-2022-20549 Resource allocation without limits in xenPriority MEDIUM 40
- TI-2022-20548 Use after free in xenPriority LOW 36
- TI-2022-20550 Resource allocation without limits in xenPriority LOW 28
Show all 4 records → Advisory →

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product

Red Hat

Timeline

2026-10-02 Threatist record created from CVE-2022-42331
2026-10-03 Alias added: GHSA-f5x9-rprw-5rc4

References

Advisory 6

Other 1

https://security.gentoo.org/glsa/202402-07

TI-2012-00210 The x86-64 kernel system-call functionality in Xen 4.1.2 and earlier, as used in Citrix… CVSS 2.0HIGH 7.2
TI-2023-07042 Information disclosure through error messages in AMD Ryzen™ 3000 Series Desktop… CVSS 3.1MEDIUM 5.5
TI-2015-04333 The C+ mode offload emulation in the RTL8139 network card device model in QEMU, as used… CVSS 2.0HIGH 9.3
TI-2015-06741 The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows… CVSS 3.1CRITICAL 10.0
TI-2018-06436 A statement in the System Programming Guide of the Intel 64 and IA-32 Architectures… CVSS 3.0HIGH 7.8
TI-2024-20522 x86: Incorrect logic for BTC/SRSO mitigations CVSS 3.1HIGH 7.5

See all 489 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences