[Ksplice][Virtuozzo 4.7 Updates] New Ksplice updates for Virtuozzo 4.7 or OpenVZ on RHEL 6 (2.6.32-042stab126.1)

[Oracle Ksplice]

Synopsis: 2.6.32-042stab126.1 can now be patched using Ksplice
CVEs: CVE-2017-1000112 CVE-2017-14106 CVE-2017-15265

Systems running Virtuozzo 4.7 or the OpenVZ RHEL 6 kernel can now use
Ksplice to patch against the latest Parallels Virtuozzo Containers 4.7
kernel security update, 2.6.32-042stab126.1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Virtuozzo 4.7
or OpenVZ 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

* CVE-2017-14106: Denial-of-service when TCP window scaling is not enabled.

A division-by-zero error occurs when selecting the window size for TCP
over IPv4, resulting in denial-of-service.


* CVE-2017-15265: Use-after-free in ALSA seq port creation.

Failure to increment a reference count error during creation of an ALSA
seq port can result in a use-after-free. A local user could use this
flaw to escalate privileges.


* CVE-2017-1000112: Privilege escalation using the UDP Fragmentation Offload (UFO) code.

Multiple missing checks on headers length when using UDP Fragmentation
Offload (UFO) protocol while sending packets could lead to out-of-bounds
accesses. A local attacker with CAP_NET_RAW capability, or on a system
with unprivileged namespace enabled, could use this flaw to cause a
denial-of-service or execute arbitrary code.

SUPPORT

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