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Test ID:1.3.6.1.4.1.25623.1.0.702632
Category:Debian Local Security Checks
Title:Debian Security Advisory DSA 2632-1 (linux-2.6 - privilege escalation/denial of service)
Summary:Several vulnerabilities have been discovered in the Linux kernel that may lead;to a denial of service or privilege escalation. The Common Vulnerabilities and;Exposures project identifies the following problems:;;CVE-2013-0231;Jan Beulich provided a fix for an issue in the Xen PCI backend drivers.;Users of guests on a system using passed-through PCI devices can create;a denial of service of the host system due to the use of non-ratelimited;kernel log messages.;;CVE-2013-0871;Suleiman Souhlal and Salman Qazi of Google, with help from Aaron Durbin;and Michael Davidson of Google, discovered an issue in the;ptrace subsystem. Due to a race condition with PTRACE_SETREGS, local users;can cause kernel stack corruption and execution of arbitrary code.
Description:Summary:
Several vulnerabilities have been discovered in the Linux kernel that may lead
to a denial of service or privilege escalation. The Common Vulnerabilities and
Exposures project identifies the following problems:

CVE-2013-0231
Jan Beulich provided a fix for an issue in the Xen PCI backend drivers.
Users of guests on a system using passed-through PCI devices can create
a denial of service of the host system due to the use of non-ratelimited
kernel log messages.

CVE-2013-0871
Suleiman Souhlal and Salman Qazi of Google, with help from Aaron Durbin
and Michael Davidson of Google, discovered an issue in the
ptrace subsystem. Due to a race condition with PTRACE_SETREGS, local users
can cause kernel stack corruption and execution of arbitrary code.

Affected Software/OS:
linux-2.6 on Debian Linux

Solution:
For the stable distribution (squeeze), this problem has been fixed in version
2.6.32-48squeeze1.

The following matrix lists additional source packages that were rebuilt for
compatibility with or to take advantage of this update:

?Debian 6.0 (squeeze)user-mode-linux2.6.32-1um-4+48squeeze1
We recommend that you upgrade your linux-2.6 and user-mode-linux packages.

CVSS Score:
6.9

CVSS Vector:
AV:L/AC:M/Au:N/C:C/I:C/A:C

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-0871
Debian Security Information: DSA-2632 (Google Search)
http://www.debian.org/security/2013/dsa-2632
http://www.openwall.com/lists/oss-security/2013/02/15/16
RedHat Security Advisories: RHSA-2013:0567
http://rhn.redhat.com/errata/RHSA-2013-0567.html
RedHat Security Advisories: RHSA-2013:0661
http://rhn.redhat.com/errata/RHSA-2013-0661.html
RedHat Security Advisories: RHSA-2013:0662
http://rhn.redhat.com/errata/RHSA-2013-0662.html
RedHat Security Advisories: RHSA-2013:0695
http://rhn.redhat.com/errata/RHSA-2013-0695.html
SuSE Security Announcement: SUSE-SU-2013:0341 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2013-02/msg00022.html
SuSE Security Announcement: SUSE-SU-2013:0674 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00018.html
SuSE Security Announcement: openSUSE-SU-2013:0925 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2013-06/msg00005.html
http://www.ubuntu.com/usn/USN-1736-1
http://www.ubuntu.com/usn/USN-1737-1
http://www.ubuntu.com/usn/USN-1738-1
http://www.ubuntu.com/usn/USN-1739-1
http://www.ubuntu.com/usn/USN-1740-1
http://www.ubuntu.com/usn/USN-1741-1
http://www.ubuntu.com/usn/USN-1742-1
http://www.ubuntu.com/usn/USN-1743-1
http://www.ubuntu.com/usn/USN-1744-1
http://www.ubuntu.com/usn/USN-1745-1
Common Vulnerability Exposure (CVE) ID: CVE-2013-0231
BugTraq ID: 57740
http://www.securityfocus.com/bid/57740
http://www.openwall.com/lists/oss-security/2013/02/05/9
http://osvdb.org/89903
http://secunia.com/advisories/52059
SuSE Security Announcement: openSUSE-SU-2013:0395 (Google Search)
http://lists.opensuse.org/opensuse-security-announce/2013-03/msg00004.html
XForce ISS Database: xen-pcibackenablemsi-dos(81923)
https://exchange.xforce.ibmcloud.com/vulnerabilities/81923
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