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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0283
The remote host is missing updates announced in
advisory RHSA-2011:0283.

The kernel packages contain the Linux kernel, the core of any Linux
operating system.

This update fixes the following security issues:

* A divide-by-zero flaw was found in the tcp_select_initial_window()
function in the Linux kernel's TCP/IP protocol suite implementation. A
local, unprivileged user could use this flaw to trigger a denial of service
by calling setsockopt() with certain options. (CVE-2010-4165, Moderate)

* A use-after-free flaw in the mprotect() system call in the Linux kernel
could allow a local, unprivileged user to cause a local denial of service.
(CVE-2010-4169, Moderate)

* A flaw was found in the Linux kernel execve() system call implementation.
A local, unprivileged user could cause large amounts of memory to be
allocated but not visible to the OOM (Out of Memory) killer, triggering a
denial of service. (CVE-2010-4243, Moderate)

Red Hat would like to thank Steve Chen for reporting CVE-2010-4165, and
Brad Spengler for reporting CVE-2010-4243.

This update also fixes several bugs and adds two enhancements.
Documentation for these bug fixes and enhancements will be available
shortly from the Technical Notes document linked to in the References

Users should upgrade to these updated packages, which contain backported
patches to correct these issues, and fix the bugs and add the enhancements
noted in the Technical Notes. The system must be rebooted for this update
to take effect.

Please note that this update is available via
Red Hat Network. To use Red Hat Network, launch the Red
Hat Update Agent with the following command: up2date

Risk factor : Medium

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-4165
BugTraq ID: 44830
SuSE Security Announcement: SUSE-SA:2011:001 (Google Search)
SuSE Security Announcement: SUSE-SA:2011:002 (Google Search)
SuSE Security Announcement: SUSE-SA:2011:004 (Google Search)
SuSE Security Announcement: SUSE-SA:2011:007 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2010-4169
BugTraq ID: 44861
XForce ISS Database: kernel-perfeventmmap-dos(63316)
Common Vulnerability Exposure (CVE) ID: CVE-2010-4243
BugTraq ID: 45004
Bugtraq: 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console (Google Search)
XForce ISS Database: linux-kernel-execve-dos(64700)
CopyrightCopyright (c) 2011 E-Soft Inc.

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