Vulnerability identifier: #VU41142

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-3645

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

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

Vendor: Linux Foundation

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

arch/x86/kvm/vmx.c in the KVM subsystem in the Linux kernel before 3.12 does not have an exit handler for the INVEPT instruction, which allows guest OS users to cause a denial of service (guest OS crash) via a crafted application.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel: 3.0 - 3.0.68, 3.1 - 3.1.10, 3.2 - 3.2.30, 3.3 - 3.3.8, 3.4 - 3.4.32, 3.5.1 - 3.5.7, 3.6 - 3.6.11, 3.7 - 3.7.10, 3.8.0 - 3.8.13, 3.9 - 3.9.11, 3.10.1 - 3.10.18, 3.11 - 3.11.6

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External links
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=bfd0a56b90005f8c8a004baf407ad90045c2b11e
http://rhn.redhat.com/errata/RHSA-2015-0126.html
http://rhn.redhat.com/errata/RHSA-2015-0284.html
http://www.debian.org/security/2014/dsa-3060
http://www.openwall.com/lists/oss-security/2014/10/24/9
http://www.ubuntu.com/usn/USN-2417-1
http://www.ubuntu.com/usn/USN-2418-1
http://bugzilla.redhat.com/show_bug.cgi?id=1144835
http://github.com/torvalds/linux/commit/bfd0a56b90005f8c8a004baf407ad90045c2b11e

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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