CVE-2021-43056

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CVSS 3.1

5.5 medium

EPSS

<1%p30

Published

Oct 28, 2021 (Oct 28, 2021)

Modified

Jun 17, 2026

Description

An issue was discovered in the Linux kernel for powerpc before 5.14.15. It allows a malicious KVM guest to crash the host, when the host is running on Power8, due to an arch/powerpc/kvm/book3s_hv_rmhandlers.S implementation bug in the handling of the SRR1 register values.

Vendors: linux fedoraproject
Products: linux kernel, fedora
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (0.4%)

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