CVE-2026-72294

A flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) component, specifically within the LoongArch architecture. The kvm_vcpu_ioctl_interrupt() function, which can be invoked from userspace, lacks proper validation of interrupt requests. This missing validity check could allow a local attacker to trigger an invalid interrupt, potentially leading to a denial of service.

A moderate severity flaw was found in the Linux kernel's Kernel-based Virtual Machine (KVM) support for the LoongArch architecture. The kvm_vcpu_ioctl_interrupt() function, which can be invoked from userspace, did not validate the interrupt request passed to it, allowing a local attacker with access to a KVM virtual CPU to trigger an invalid interrupt and potentially cause a denial of service. Red Hat rated this flaw Moderate (CVSS 3.1 score 5.5, CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H) because the impact is limited to availability, with no confidentiality or integrity impact; this differs from the upstream CVEORG rating of Important (8.8), which assumes a changed scope with high confidentiality and integrity impact. Red Hat Enterprise Linux and Red Hat In-Vehicle OS are not affected by this flaw because the vulnerable LoongArch KVM code is not present in the kernels shipped for these products.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.