Vulnerability CVE-2015-3214
Published: 2015-08-31

Description:
The pit_ioport_read in i8254.c in the Linux kernel before 2.6.33 and QEMU before 2.3.1 does not distinguish between read lengths and write lengths, which might allow guest OS users to execute arbitrary code on the host OS by triggering use of an invalid index.

CVSS2 => (AV:L/AC:M/Au:N/C:C/I:C/A:C)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.9/10
10/10
3.4/10
Exploit range
Attack complexity
Authentication
Local
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
Complete
Complete
Complete
Affected software
QEMU -> QEMU 
Linux -> Linux kernel 

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