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CVE-2021-43056

Published: Oct 28, 2021

Modified: Aug 4, 2024

PUBLISHED

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.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

References

https://git.kernel.org/linus/cdeb5d7d890e14f3b70e8087e745c4a6a7d9f337

x_refsource_MISC

https://lore.kernel.org/linuxppc-dev/87pmrtbbdt.fsf%40mpe.ellerman.id.au/T/#u

x_refsource_MISC

https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.14.15

x_refsource_MISC

[oss-security] 20211028 Re: Linux kernel: powerpc: KVM guest can trigger host crash on Power8

mailing-list

x_refsource_MLIST

FEDORA-2021-4320606094

vendor-advisory

x_refsource_FEDORA

FEDORA-2021-ed8c2e1098

vendor-advisory

x_refsource_FEDORA

FEDORA-2021-4fed2b55c4

vendor-advisory

x_refsource_FEDORA

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