Out-of-bounds Read Affecting xen package, versions <0:3.0.3-148.el5_11
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL10-XEN-9846012
- published28 Apr 2025
- disclosed6 Dec 2016
Introduced: 6 Dec 2016
CVE-2016-9637 (opens in a new tab)How to fix?
Upgrade RHEL:10 xen to version 0:3.0.3-148.el5_11 or higher.
This issue was patched in RHSA-2016:2963.
NVD Description
Note: Versions mentioned in the description apply only to the upstream xen package and not the xen package as distributed by RHEL.
See How to fix? for RHEL:10 relevant fixed versions and status.
The (1) ioport_read and (2) ioport_write functions in Xen, when qemu is used as a device model within Xen, might allow local x86 HVM guest OS administrators to gain qemu process privileges via vectors involving an out-of-range ioport access.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1397043
- https://access.redhat.com/security/cve/CVE-2016-9637
- https://access.redhat.com/errata/RHSA-2016:2963
- http://rhn.redhat.com/errata/RHSA-2016-2963.html
- http://www.securityfocus.com/bid/94699
- http://www.securitytracker.com/id/1037397
- http://xenbits.xen.org/xsa/advisory-199.html
- https://lists.debian.org/debian-lts-announce/2018/02/msg00005.html
- https://security.gentoo.org/glsa/201612-56
- https://support.citrix.com/article/CTX219136