CVE-2022-42331: fedoraproject fedora
Vulnerability summary
CVE-2022-42331 is a medium (CVSS 5.5) vulnerability in fedoraproject fedora. EPSS estimates a 0.28% chance of exploitation in the next 30 days, higher than 18.7% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 10 · Related 9Timeline
- 21-03-2023PublishedVulnerability first disclosed.
- 13-02-2025Last modifiedVulnerability information updated.
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.
CVSS metrics
4 scores · 4 sources · 1 version- OSV · AlpineEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
EPSS trend
Probability
0.28%
Chance of exploitation in the next 30 days
Percentile
19%
Versus all other CVEs
30-day change
0.00 pp
From 0.27% on 19-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeNo weakness data has been published for this record.
Affected systems
Alpine1 product
- xen≥ 4.5.0, < 4.15.5-r0 | ≥ 4.5.0, < 4.16.4-r0 | ≥ 4.5.0, < 4.17.0-r5
Debian1 product
- xen< 4.17.0+74-g3eac216e6e-1
Fedoraproject1 product
- fedoraEOL37 | 38
Ubuntu1 product
- xenAll versions (No fix recorded)
Xen1 product
- xen≥ 4.5.0, ≤ 4.17.0
5 vendors · 5 products
