GHSA-2rvp-wpqf-89pf · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12...
In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12 register on kernel entry Before commit f33f2d4c7c80 ("s390/bp: remove TIF_ISOLATE_BP"), all entry handlers loaded r12 with the current task pointer (lg %r12,__LC_CURRENT) for use by the BPENTER/BPEXIT macros. That commit removed TIF_ISOLATE_BP, dropping both the branch prediction macros and the r12 load, but did not add r12 to the register clearing sequence. Add the missing xgr %r12,%r12 to make the register scrub consistent across all entry points.
Conclusion & alert: CVE-2026-31482 is rated Low Risk (4.8/100): low exploitation likelihood (EPSS 0.02%). 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 | — | 0.02% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
No CVSS data in dataset for this CVE.
GHSA-2rvp-wpqf-89pf · Severity: medium — In the Linux kernel, the following vulnerability has been resolved: s390/entry: Scrub r12...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-31482 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2026-31482 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-31482 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-31482/ |
ubuntu
|
medium | CVE-2026-31482 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, not-affected 90, released 83, needed 55, needs-triage 4. | https://ubuntu.com/security/CVE-2026-31482 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||