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The remote Red Hat host is missing one or more security updates.
Updated kernel packages that fix multiple security issues and one bug
are now available for Red Hat Enterprise Linux 5.2 Extended Update
This update has been rated as having important security impact by the
Red Hat Security Response Team.
The kernel packages contain the Linux kernel, the core of any Linux
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,
* 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,
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'. (BZ#538409)
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.
See also :
Update the affected packages.
Risk factor :
High / CVSS Base Score : 7.2
CVSS Temporal Score : 5.6
Public Exploit Available : true
Family: Red Hat Local Security Checks
Nessus Plugin ID: 63910 ()
Bugtraq ID: 36901
CVE ID: CVE-2009-2695CVE-2009-3547
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