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CVE-2015-2151

Status Candidate

Overview

The x86 emulator in Xen 3.2.x through 4.5.x does not properly ignore segment overrides for instructions with register operands, which allows local guest users to obtain sensitive information, cause a denial of service (memory corruption), or possibly execute arbitrary code via unspecified vectors.

Related Files

Gentoo Linux Security Advisory 201604-03
Posted Apr 6, 2016
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201604-3 - Multiple vulnerabilities have been found in Xen, the worst of which cause a Denial of Service. Versions less than 4.6.0-r9 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2012-3494, CVE-2012-3495, CVE-2012-3496, CVE-2012-3497, CVE-2012-3498, CVE-2012-3515, CVE-2012-4411, CVE-2012-4535, CVE-2012-4536, CVE-2012-4537, CVE-2012-4538, CVE-2012-4539, CVE-2012-6030, CVE-2012-6031, CVE-2012-6032, CVE-2012-6033, CVE-2012-6034, CVE-2012-6035, CVE-2012-6036, CVE-2015-2151, CVE-2015-3209, CVE-2015-3259, CVE-2015-3340, CVE-2015-3456, CVE-2015-4103, CVE-2015-4104, CVE-2015-4105, CVE-2015-4106
MD5 | 20a8dd6ab770203e984ff134455bfbf5
Red Hat Security Advisory 2016-0450-01
Posted Mar 15, 2016
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2016-0450-01 - The kernel packages contain the Linux kernel, the core of any Linux operating system. An integer overflow flaw was found in the way the Linux kernel's Frame Buffer device implementation mapped kernel memory to user space via the mmap syscall. A local user able to access a frame buffer device file could possibly use this flaw to escalate their privileges on the system. It was found that the Xen hypervisor x86 CPU emulator implementation did not correctly handle certain instructions with segment overrides, potentially resulting in a memory corruption. A malicious guest user could use this flaw to read arbitrary data relating to other guests, cause a denial of service on the host, or potentially escalate their privileges on the host.

tags | advisory, denial of service, overflow, arbitrary, x86, kernel, local
systems | linux, redhat
advisories | CVE-2013-2596, CVE-2015-2151
MD5 | 3d1ebf75586be6efc736f3e37729f3bc
Debian Security Advisory 3181-1
Posted Mar 11, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3181-1 - Multiple security issues have been found in the Xen virtualisation solution.

tags | advisory
systems | linux, debian
advisories | CVE-2015-2044, CVE-2015-2045, CVE-2015-2151
MD5 | 2768ba40912b3d996063ab23fdd40d76
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