Vulnerability identifier: #VU8695

Vulnerability risk: Low

CVSSv3.1: 5.9 [CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-1000252

CWE-ID: CWE-617

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.

The KVM subsystem in the Linux kernel through 4.13.3 allows guest OS users to cause a denial of service (assertion failure, and hypervisor hang or crash) via an out-of bounds guest_irq value, related to arch/x86/kvm/vmx.c and virt/kvm/eventfd.c.

Mitigation
Install the latest version of Linux kernel 4.4.90, 4.13.5 or 4.9.53.

Vulnerable software versions

Linux kernel: 4.13 - 4.13.3, 4.9 - 4.9.54, 4.4 - 4.4.89

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External links
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.4.90
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.13.5
http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.53

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.