AZL-101535
See a problem?- Import Source
- https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-101535.json
- JSON Data
- https://api.osv.dev/v1/vulns/AZL-101535
- Upstream
- Published
- 2026-09-16T11:17:01Z
- Modified
- 2026-09-18T05:37:08Z
- Summary
- CVE-2026-89921 affecting package kernel 6.6.150.1-1
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
KVM: s390: Zero initialize data structures for inject_pfault_token
__kvm_inject_pfault_token() only sets .type and .u.ext.ext_params2 of the on-stack struct kvm_s390_irq but the full ext substructure is copied into the cpu local variable on inject. ext_params and pad contain stale stack values.
Interrupt delivery only uses ext_params2, so nothing leaks to the guest, but a host user can use the migration ioctls to get to the data.
Fix by zero-initializing the irq struct. Do the same for the inti data structure.
- References