AZL-93695
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-93695.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/AZL-93695
- Upstream
- Published
- 2026-07-25T10:17:09Z
- Modified
- 2026-08-28T17:47:33Z
- Summary
- CVE-2026-64286 affecting package kernel for versions less than 6.6.145.2-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: arm64: Clear __hyp_running_vcpu when flushing the pKVM hyp vCPU
flush_hyp_vcpu() copies the host vCPU context into the hyp's private vCPU on every run. ctxt_to_vcpu() expects a guest context to have a NULL __hyp_running_vcpu, which is only ever set on the host context, so that it resolves the vCPU via container_of(). While this is generally the case, flush_hyp_vcpu() copies the context verbatim and does not enforce this, so a value provided by the host is dereferenced at EL2 (host -> EL2).
Fix by clearing __hyp_running_vcpu after the copy.
- References