GHSA-44v7-9mpr-qvfc · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre...
In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre boundary for syscall dispatch table The s390 syscall number is directly controlled by userspace, but does not have an array_index_nospec() boundary to prevent access past the syscall function pointer tables.
Conclusion & alert: CVE-2026-31483 is rated Low Risk (8.7/100): low exploitation likelihood (EPSS 0.03%). Mandatory action: Low composite risk—no urgent action required; patch on your normal maintenance cycle and revisit priority if CVSS or EPSS increases.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-23 | — | 0.03% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-44v7-9mpr-qvfc · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: s390/syscalls: Add spectre...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-31483 unimportant priority: Debian including 2 source packages (linux, linux-6.1), 6 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 6. | https://security-tracker.debian.org/tracker/CVE-2026-31483 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-31483 |
suse
|
medium | CVE-2026-31483 severity moderate: SUSE including 16 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 58 product×package rows across 12 product lines (SUSE Linux Enterprise Live Patching 12 SP5, SUSE Linux Enterprise Micro 5.0, … (12 product lines)): Known Not Affected 58. | https://www.suse.com/security/cve/CVE-2026-31483/ |
ubuntu
|
medium | CVE-2026-31483 medium priority: Ubuntu including 161 source packages (linux, linux-allwinner-5.19, …), 1449 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1048, ignored 169, needed 88, released 83, not-affected 57, needs-triage 4. | https://ubuntu.com/security/CVE-2026-31483 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||