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veracodeVeracode Vulnerability DatabaseVERACODE:12856
HistoryJan 15, 2019 - 9:22 a.m.

Privilege Escalation

2019-01-1509:22:45
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
15

EPSS

0.001

Percentile

28.1%

rhev-hypervisor7 is vulnerable to denial of service (DoS) attacks. The vulnerability exists as kernel KVM before versions kernel 4.16, kernel 4.16-rc7, kernel 4.17-rc1, kernel 4.17-rc2 and kernel 4.17-rc3 is vulnerable to a flaw in the way the Linux kernel’s KVM hypervisor handled exceptions delivered after a stack switch operation via Mov SS or Pop SS instructions. During the stack switch operation, the processor did not deliver interrupts and exceptions, rather they are delivered once the first instruction after the stack switch is executed. An unprivileged KVM guest user could use this flaw to crash the guest or, potentially, escalate their privileges in the guest.