CVE-2016-5126

moderate-risk
Published 2016-06-01

Heap-based buffer overflow in the iscsi_aio_ioctl function in block/iscsi.c in QEMU allows local guest OS users to cause a denial of service (QEMU process crash) or possibly execute arbitrary code via a crafted iSCSI asynchronous I/O ioctl call.

Do I need to act?

-
0.26% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (20)

Affected Vendors

Oracle Debian Qemu Canonical Redhat

References (36)

http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=a6b3167fa0e825aebb5a7cd8b437b6d41...
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1606.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1607.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1653.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1654.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1655.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1756.html
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1763.html
Mailing List http://www.openwall.com/lists/oss-security/2016/05/30/6
Mailing List http://www.openwall.com/lists/oss-security/2016/05/30/7
Third Party Advisory http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.h...
Third Party Advisory http://www.securityfocus.com/bid/90948
Third Party Advisory http://www.ubuntu.com/usn/USN-3047-1
Third Party Advisory http://www.ubuntu.com/usn/USN-3047-2
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1340924
Mailing List https://lists.debian.org/debian-lts-announce/2019/09/msg00021.html
Mailing List https://lists.gnu.org/archive/html/qemu-block/2016-05/msg00779.html
Third Party Advisory https://security.gentoo.org/glsa/201609-01
http://git.qemu.org/?p=qemu.git%3Ba=commit%3Bh=a6b3167fa0e825aebb5a7cd8b437b6d41...
Third Party Advisory http://rhn.redhat.com/errata/RHSA-2016-1606.html
and 16 more references
47
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 1/34 · Minimal
Exposure 22/34 · High