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Debian Security Advisory 4236-1

Debian Security Advisory 4236-1
Posted Jun 29, 2018
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4236-1 - Multiple vulnerabilities have been discovered in the Xen hypervisor.

tags | advisory, vulnerability
systems | linux, debian
advisories | CVE-2018-12891, CVE-2018-12892, CVE-2018-12893
MD5 | d368b52f6db663340de9c0df4d45e137

Debian Security Advisory 4236-1

Change Mirror Download
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- -------------------------------------------------------------------------
Debian Security Advisory DSA-4236-1 security@debian.org
https://www.debian.org/security/ Moritz Muehlenhoff
June 27, 2018 https://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package : xen
CVE ID : CVE-2018-12891 CVE-2018-12892 CVE-2018-12893

Multiple vulnerabilities have been discovered in the Xen hypervisor:

CVE-2018-12891

It was discovered that insufficient validation of PV MMU operations
may result in denial of service.

CVE-2018-12892

It was discovered that libxl fails to honour the 'readonly' flag on
HVM-emulated SCSI disks.

CVE-2018-12893

It was discovered that incorrect implementation of debug exception
checks could result in denial of service.

For the stable distribution (stretch), these problems have been fixed in
version 4.8.3+xsa267+shim4.10.1+xsa267-1+deb9u9.

We recommend that you upgrade your xen packages.

For the detailed security status of xen please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/xen

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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