CVE-2026-74515

CVE-2026-74515 is a Linux kernel vulnerability affecting KVM on s390 where the MPCIFC instruction may register adapter interrupts without proper unregistering. The fix rejects enabling interrupt forwarding if it is already enabled for a zPCI device, preventing overwriting and leakage of resources...

PT-2026-72967

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: pci: Reject adapter interrupt forwarding if already enabled The MPCIFC instruction doesn't allow registering adapter interrupts without first unregistering. So reject any request to enable interrupt forwarding if its...