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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Security Advisory RHSA-2009:1672
The remote host is missing updates announced in
advisory RHSA-2009:1672.

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

This update fixes the following security issues:

* a system with SELinux enforced was more permissive in allowing local
users in the unconfined_t domain to map low memory areas even if the
mmap_min_addr restriction was enabled. This could aid in the local
exploitation of NULL pointer dereference bugs. (CVE-2009-2695, Important)

* a NULL pointer dereference flaw was found in each of the following
functions in the Linux kernel: pipe_read_open(), pipe_write_open(), and
pipe_rdwr_open(). When the mutex lock is not held, the i_pipe pointer could
be released by other processes before it is used to update the pipe's
reader and writer counters. This could lead to a local denial of service or
privilege escalation. (CVE-2009-3547, Important)

This update also fixes the following bug:

* a bug in the IPv6 implementation in the Linux kernel could have caused an
unbalanced reference count. When using network bonding, this bug may have
caused a hang when shutting the system down via shutdown -h, or prevented
the network service from being stopped via service network stop.

Users should upgrade to these updated packages, which contain backported
patches to correct these issues. 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-2009-2695
BugTraq ID: 36051
Debian Security Information: DSA-2005 (Google Search)
RedHat Security Advisories: RHSA-2009:1540
RedHat Security Advisories: RHSA-2009:1548
Common Vulnerability Exposure (CVE) ID: CVE-2009-3547
BugTraq ID: 36901
Bugtraq: 20100625 VMSA-2010-0010 ESX 3.5 third party update for Service Console kernel (Google Search)
RedHat Security Advisories: RHSA-2009:1541
RedHat Security Advisories: RHSA-2009:1550
SuSE Security Announcement: SUSE-SA:2009:054 (Google Search)
SuSE Security Announcement: SUSE-SA:2009:056 (Google Search)
SuSE Security Announcement: SUSE-SA:2010:001 (Google Search)
SuSE Security Announcement: SUSE-SA:2010:012 (Google Search)
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