[Ksplice][RHEL6-Updates] New updates available via Ksplice (RHSA-2012:0571-1)
Sasha Levin
sasha.levin at oracle.com
Wed May 16 09:42:46 PDT 2012
Synopsis: RHSA-2012:0571-1 can now be patched using Ksplice
CVEs: CVE-2011-4086 CVE-2012-1601
Systems running Red Hat Enterprise Linux 6 can now use Ksplice to
patch against the latest Red Hat Security Advisory, RHSA-2012:0571-1.
INSTALLING THE UPDATES
We recommend that all users of Ksplice Uptrack on RHEL 6 install these
updates.
On systems that have "autoinstall = yes" in /etc/uptrack/uptrack.conf,
these updates will be installed automatically and you do not need to
take any action.
Alternatively, you can install these updates by running:
# /usr/sbin/uptrack-upgrade -y
DESCRIPTION
* Denial of service due to race condition in the scheduler subsystem.
A race condition between exiting a task on one CPU and waking it up by a
different CPU can cause a kernel panic when the second task will try
waking up a dead task.
* CVE-2011-4086: Denial of service in journaling block device.
The journal block device assumed that a buffer marked as unwritten
or delay could be live without checking if the buffer was mapped.
An unprivileged local user could use this flaw to crash the system.
* CVE-2012-1601: Denial of service in KVM VCPU creation.
Inconsistent state in the creation of KVM virtual CPU's could
lead to NULL pointer dereferences. A unprivileged local user
could use this flaw to crash the system.
SUPPORT
Ksplice support is available at ksplice-support_ww at oracle.com.
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