GHSA-gj33-hwgc-v3v8 · Severity: high — In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Raise #UD if...
In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Raise #UD if unhandled VMMCALL isn't intercepted by L1 Explicitly synthesize a #UD for VMMCALL if L2 is active, L1 does NOT want to intercept VMMCALL, nested_svm_l2_tlb_flush_enabled() is true, and the hypercall is something other than one of the supported Hyper-V hypercalls. When all of the above conditions are met, KVM will intercept VMMCALL but never forward it to L1, i.e. will let L2 make hypercalls as if it were L1. The TLFS says a whole lot of nothing about this scenario, so go with the architectural behavior, which says that VMMCALL #UDs if it's not intercepted. Opportunistically do a 2-for-1 stub trade by stub-ifying the new API instead of the helpers it uses. The last remaining "single" stub will soon be dropped as well. [sean: rewrite changelog and comment, tag for stable, remove defunct stubs]
Conclusion & alert: CVE-2026-46076 is rated Low Risk (33.3/100): CVSS High severity, with low exploitation likelihood (EPSS 0.02%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
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 | 2026-05-28 | — | 0.02% | — |
Full EPSS history (1 record total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.9 | 3.1 | HIGH |
|
2.0 | 5.3 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 |
GHSA-gj33-hwgc-v3v8 · Severity: high — In the Linux kernel, the following vulnerability has been resolved: KVM: nSVM: Raise #UD if...
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2026-46076 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-2026-46076 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2026-46076 |
suse
|
high | — | https://www.suse.com/security/cve/CVE-2026-46076/ |
ubuntu
|
medium | CVE-2026-46076 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1422 status rows across 9 suites (bionic, focal, jammy, noble, questing, resolute, trusty, upstream, xenial): DNE 1024, ignored 169, released 84, not-affected 79, needed 60, pending 6. | https://ubuntu.com/security/CVE-2026-46076 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||