CVE-2026-72295 LoongArch: KVM: Validate irqchip index in irqfd routing
Missing validation of irqchip index in LoongArch KVM allows out-of-bounds access, potentially leading to privilege escalation or denial of service.
- 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-2026-72295?
CVE-2026-72295 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: Validate irqchip index in irqfd routing
Sashiko reported that the irqchip index is not validated for LoongArch. Add validation and reject out-of-range irqchip indexes to avoid indexing past the routing table's chip array.
Which versions are affected by CVE-2026-72295?
How do I fix CVE-2026-72295?
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-2026-72295 being exploited?
There is no known exploitation of CVE-2026-72295 in the wild and no public exploit code.
Sources
Also known as BELL-CVE-2026-72295, DEBIAN-CVE-2026-72295, GHSA-xrj6-m35p-fmrw, UBUNTU-CVE-2026-72295.