CVE-2026-98466High· 8.2▾ TwilightA flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem on ARM64 platforms. During system initialization in protected virtualization modes, the hypervisor fails to revoke host stage-2 access permissions for per-…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 45.1 · likelihood 0 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Exploit-prediction probability, daily snapshots since Oct 20.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via CSAF
0.2%
— → 8.2
none → high
Last analysed / modified upstream
A flaw was found in the Linux kernel's KVM (Kernel-based Virtual Machine) subsystem on ARM64 platforms. During system initialization in protected virtualization modes, the hypervisor fails to revoke host stage-2 access permissions for per-CPU hypervisor stack memory pages. A privileged local host can exploit this flaw to inspect or alter sensitive hypervisor stack data, resulting in a bypass of hypervisor isolation and potential privilege escalation.
kernel: KVM: arm64: Transfer the hyp stack pages out of the host stage-2 — rated Important by Red Hat. Released 2026-10-18, updated 2026-10-24.
Affected:
No fix planned:
Not affected:
Fix deferred
Workarounds / mitigations:
The highest-value action is to revoke host stage-2 page-table mappings for per-CPU hypervisor stack memory during…
Field changes observed since this record was first indexed.
Connected by shared product, vendor, weakness, or advisory.
CVE-2026-109740High· 8.8Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component
CVE-2026-106071Low· 3.6nodejs: nodejs: Permission model bypass via wildcard path matching flaw (CVE-2026-106071)
CVE-2026-106070Low· 3.7nodejs: Node.js: Security inspection bypass via crafted ZIP archive header mismatch (CVE-2026-106070)
CVE-2026-98873Low· 3.3kernel: netfilter: nf_conntrack_expect: zero at allocation time (CVE-2026-98873)
CVE-2026-98871Medium· 4.1kernel: crypto: ccp - Fix possible deadlock in SEV init failure path (CVE-2026-98871)
CVE-2026-98876Medium· 4.1kernel: host1x: bus: Fix missing ops null check in error teardown (CVE-2026-98876)