[Ksplice][Virtuozzo 4 Updates] New updates available via Ksplice (2.6.18-371.8.1.el5.028stab113.1)

[Samson Yeung]

Synopsis: 2.6.18-371.8.1.el5.028stab113.1 can now be patched using Ksplice
CVEs: CVE-2012-6638 CVE-2013-2888 CVE-2014-1737 CVE-2014-1738

Systems running Virtuozzo 4 or the OpenVZ RHEL 5 kernel can now use
Ksplice to patch against the latest Parallels Virtuozzo Containers
kernel security update, 2.6.18-371.8.1.el5.028stab113.1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack on Virtuozzo 4 or
OpenVZ on RHEL 5 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

* CVE-2014-1737, CVE-2014-1738: Local privilege escalation in floppy ioctl.

The floppy driver would leak internal memory addresses to userspace,
and would allow unprivileged userspace code to overwrite those
addresses, allowing for a local privilege escalation and gaining
of root.


* CIFS mount failure on VZ hardware node.

Incorrect permissions checks could result in failure to mount a CIFS
filesystem on the hardware node of a VZ system.


* CVE-2012-6638: Denial-of-service in TCP's SYN+FIN messages.

TCP's SYN+FIN messages had an issue where an attacker could cuase a
denial-of-service via a flood for SYN+FIN TCP packets.


* CVE-2013-2888: Kernel memory corruption flaw via oversize HID report id.

The Human Interface Device (HID) code is vulnerable to a memory
corruption flaw. An attacker could use this to crash the system
resulting in a denial-of-service or could elevate privileges.


* Panic in GFS2 filesystem locking code.

If a readpage operation attempted to take a lock that was already held
elsewhere, a kernel panic would occur.


* NULL pointer dereference in IUCV code.

In certain circumstances while establishing a connection, the Inter User
Communication Vehicle (IUCV) code would dereference a NULL pointer which
an attacker could use to cause a denial-of-service.


* Soft lockup as a result of a race in SUNRPC.

The functions rpc_wake_up_task and rpc_wake_up_status have a race where
threads running the functions could trigger a soft lockup which an
attacker could use to cause a denial-of-service.

SUPPORT

Ksplice support is available at ksplice-support_ww at oracle.com.