Vulnerability · Published Mar 21, 2023 · Assigned by XEN
CVE-2022-42331
Medium 5.5
In plain English
A medium-severity security flaw in xen from Xen. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.5Medium
Exploit odds (30 days)0.3%top 79.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | xen | 4.17.0-r5 | ALPINE-CVE-2022-42331 |
| Alpine:v3.21 | xen | 4.17.0-r5 | ALPINE-CVE-2022-42331 |
| Alpine:v3.22 | xen | 4.17.0-r5 | ALPINE-CVE-2022-42331 |
| Alpine:v3.23 | xen | 4.17.0-r5 | ALPINE-CVE-2022-42331 |
| Alpine:v3.24 | xen | 4.17.0-r5 | ALPINE-CVE-2022-42331 |
| Debian:12 | xen | 4.17.0+74-g3eac216e6e-1 | DEBIAN-CVE-2022-42331 |
| Debian:13 | xen | 4.17.0+74-g3eac216e6e-1 | DEBIAN-CVE-2022-42331 |
| Debian:14 | xen | 4.17.0+74-g3eac216e6e-1 | DEBIAN-CVE-2022-42331 |
| Ubuntu:22.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42331 |
| Ubuntu:24.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42331 |
| Ubuntu:25.10 | xen | no fix listed | UBUNTU-CVE-2022-42331 |
| Ubuntu:26.04:LTS | xen | no fix listed | UBUNTU-CVE-2022-42331 |
| Ubuntu:26.10 | xen | no fix listed | UBUNTU-CVE-2022-42331 |
Affected products (as reported)
References
- https://xenbits.xenproject.org/xsa/advisory-429.txt
- [oss-security] 20230321 Xen Security Advisory 429 v3 (CVE-2022-42331) - x86: speculative vulnerability in 32bit SYSCALL path mailing-list
- http://xenbits.xen.org/xsa/advisory-429.html
- FEDORA-2023-703f133eb3 vendor-advisory
- FEDORA-2023-da8315e641 vendor-advisory
- DSA-5378 vendor-advisory
- https://security.gentoo.org/glsa/202402-07