CVE-2014-0155

MEDIUM

Description

The ioapic_deliver function in virt/kvm/ioapic.c in the Linux kernel through 3.14.1 does not properly validate the kvm_irq_delivery_to_apic return value, which allows guest OS users to cause a denial of service (host OS crash) via a crafted entry in the redirection table of an I/O APIC. NOTE: the affected code was moved to the ioapic_service function before the vulnerability was announced.

References

http://git.kernel.org/cgit/virt/kvm/kvm.git/commit/?id=5678de3f15010b9022ee45673f33bcfc71d47b60

http://www.openwall.com/lists/oss-security/2014/04/07/2

https://bugzilla.redhat.com/show_bug.cgi?id=1081589

Details

Source: MITRE

Published: 2014-04-14

Updated: 2014-04-15

Type: CWE-20

Risk Information

CVSS v2.0

Base Score: 5.5

Vector: AV:A/AC:L/Au:S/C:N/I:N/A:C

Impact Score: 6.9

Exploitability Score: 5.1

Severity: MEDIUM