CVE-2026-72294 LoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()
A missing validity check in the Linux kernel's KVM interrupt handler allows local users to trigger undefined behavior, potentially leading to privilege escalation or system crashes.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-72294?
CVE-2026-72294 is a high-severity missing authorization vulnerability in Linux, published on 15 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In the Linux kernel, the following vulnerability has been resolved:
LoongArch: KVM: Check irq validity in kvm_vcpu_ioctl_interrupt()
Function kvm_vcpu_ioctl_interrupt() can be called from userspace, here add irq validility cheking in kvm_vcpu_ioctl_interrupt().
Which versions are affected by CVE-2026-72294?
How do I fix CVE-2026-72294?
Apply the vendor's patch.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-72294 being exploited?
There is no known exploitation of CVE-2026-72294 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72294, DEBIAN-CVE-2026-72294, GHSA-jxx3-rvf2-64xp, UBUNTU-CVE-2026-72294.