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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2011:0836
The remote host is missing updates announced in
advisory RHSA-2011:0836.

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

This update fixes the following security issues:

* An integer underflow flaw, leading to a buffer overflow, was found in the
Linux kernel's Datagram Congestion Control Protocol (DCCP) implementation.
This could allow a remote attacker to cause a denial of service.
(CVE-2011-1770, Important)

* Missing sanity checks were found in setup_arg_pages() in the Linux
kernel. When making the size of the argument and environment area on the
stack very large, it could trigger a BUG_ON(), resulting in a local denial
of service. (CVE-2010-3858, Moderate)

* A missing validation check was found in the bcm_release() and
raw_release() functions in the Linux kernel's Controller Area Network (CAN)
implementation. This could allow a local, unprivileged user to cause a
denial of service. (CVE-2011-1598, CVE-2011-1748, Moderate)

* The fix for Red Hat Bugzilla bug 656461, as provided in RHSA-2011:0542,
introduced a regression in the cifs_close() function in the Linux kernel's
Common Internet File System (CIFS) implementation. A local, unprivileged
user with write access to a CIFS file system could use this flaw to cause a
denial of service. (CVE-2011-1771, Moderate)

Red Hat would like to thank Dan Rosenberg for reporting CVE-2011-1770
Spengler for reporting CVE-2010-3858
and Oliver Hartkopp for reporting

This update also fixes various bugs. Documentation for these bug fixes will
be available shortly from the Technical Notes document linked to in the
References section.

Users should upgrade to these updated packages, which contain backported
patches to resolve these issues, and fix the bugs 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 : High

CVSS Score:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2010-3858
BugTraq ID: 44301
Bugtraq: 20111013 VMSA-2011-0012 VMware ESXi and ESX updates to third party libraries and ESX Service Console (Google Search)
Debian Security Information: DSA-2126 (Google Search)
Common Vulnerability Exposure (CVE) ID: CVE-2011-1598
BugTraq ID: 47503
Common Vulnerability Exposure (CVE) ID: CVE-2011-1748
BugTraq ID: 47835
Common Vulnerability Exposure (CVE) ID: CVE-2011-1770
BugTraq ID: 47769
Common Vulnerability Exposure (CVE) ID: CVE-2011-1771
CopyrightCopyright (c) 2011 E-Soft Inc.

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