Memory corruption in Linux kernel x86 kvm

1) Memory corruption

EUVDB-ID: #VU92493

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2015-3214

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

The vulnerability allows a local user to execute arbitrary code.

The vulnerability exists due to memory corruption error within the pit_ioport_read() function in arch/x86/kvm/i8254.c. A local user can execute arbitrary code.

Mitigation

Install update from vendor's repository.

Vulnerable software versions

Linux kernel: All versions

CPE2.3

• cpe:2.3:o:linux_foundation:linux_kernel:*:*:*:*:*:*:*:*

External links

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ee73f656a604d5aa9df86a97102e4e462dd79924
https://github.com/torvalds/linux/commit/ee73f656a604d5aa9df86a97102e4e462dd79924
https://bugzilla.redhat.com/show_bug.cgi?id=1229640
https://mirror.linux.org.au/linux/kernel/v2.6/ChangeLog-2.6.33
https://www.openwall.com/lists/oss-security/2015/06/25/7
https://security.gentoo.org/glsa/201510-02
https://www.securityfocus.com/bid/75273
https://support.lenovo.com/product_security/qemu
https://www.securitytracker.com/id/1032598
https://support.lenovo.com/us/en/product_security/qemu
https://rhn.redhat.com/errata/RHSA-2015-1512.html
https://rhn.redhat.com/errata/RHSA-2015-1508.html
https://rhn.redhat.com/errata/RHSA-2015-1507.html
https://www.exploit-db.com/exploits/37990/
https://www.debian.org/security/2015/dsa-3348
https://www.arista.com/en/support/advisories-notices/security-advisories/1180-security-advisory-13
https://www.mail-archive.com/qemu-devel%40nongnu.org/msg304138.html

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.