CVE-2026-98470
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Don't WARN on an unknown VM ioctl in protected mode kvm_pkvm_ioctl_allowed() WARNs when kvm_get_cap_for_kvm_ioctl() doesn't find the ioctl number in vm_ioctl_caps[], and kvm_arch_vm_ioctl() calls it for every number the generic code doesn't handle, so ioctl(vm_fd, 0xdeadbeef) from userspace taints a pKVM host and panics it under panic_on_warn. The lookup is fed userspace input: return false, and userspace gets the -EINVAL kvm_arch_vm_ioctl() returns for that number on a host without pKVM.
Affected versions
Linux kernel versions
7.0
and later are affected. Fixed in
7.2.9,
7.3
and their respective stable series.
References
2 totalFrequently asked questions
-
What is CVE-2026-98470?
CVE-2026-98470 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 7.0 onward and has been patched in 7.2.9 and 7.3. CVE-2026-98470 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
-
Is there a patch available for CVE-2026-98470?
Yes. CVE-2026-98470 has been patched. Fixed versions include 7.2.9 and 7.3. If you are running Linux kernel 7.0 or later up to the fix versions, apply the relevant patch for your kernel branch.
-
Is CVE-2026-98470 actively exploited?
No. CVE-2026-98470 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.