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CVE-2021-4095
MEDIUM · CVSS 5.5
EPSS exploitation probability: 0%
Published 2022-03-10T17:44:53.563 · Last modified 2026-06-17T04:19:01.513

Summary

A NULL pointer dereference was found in the Linux kernel's KVM when dirty ring logging is enabled without an active vCPU context. An unprivileged local attacker on the host may use this flaw to cause a kernel oops condition and thus a denial of service by issuing a KVM_XEN_HVM_SET_ATTR ioctl. This flaw affects Linux kernel versions prior to 5.17-rc1.

Affected products

linux — linux_kernel

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.