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Redhat.comRH:CVE-2020-8834HistoryApr 07, 2020 - 8:05 p.m.
CVE-2020-8834
2020-04-0720:05:36
redhat.com
access.redhat.com
21
EPSS
0.001
Percentile
22.7%
A flaw was found in the way the KVM hypervisor on the Power8 processor stores the r1 register state in the ‘HSTATE_HOST_R1’ field on the Linux kernel stack. This flaw occurs while handling hypercalls in Transactional Memory ™ suspend mode in the kvmppc_save_tm and kvmppc_restore_tm routines, leading to host stack corruption. R1 register holds a stack frame address and its corruption leads the kernel into panic state. A guest user can use this flaw to crash the host kernel, resulting in a denial of service.
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