[Ksplice][Ubuntu-16.04-Updates] New Ksplice updates for Ubuntu 16.04 Xenial (USN-3582-1)

[Oracle Ksplice]

Synopsis: USN-3582-1 can now be patched using Ksplice
CVEs: CVE-2017-12190 CVE-2017-15115 CVE-2017-17712 CVE-2017-8824

Systems running Ubuntu 16.04 Xenial can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-3582-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 16.04
Xenial 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-2017-8824: Privileges escalation when calling connect() system call on a DCCP socket.

A missing free when calling connect() system call on a DCCP socket while it is
in DCCP_LISTEN state could lead to a use-after-free. A local attacker
could use this flaw to escalate privileges.


* CVE-2017-15115: Use-after-free in SCTP peel off operation inside network namespace.

A logic error when performing an SCTP peel off operation from a network
namespace can result in an incorrect free, leading to a subsequent
use-after-free. A local user could use this flaw to cause a
denial-of-service, or potentially escalate privileges.


* Improved fix for CVE-2017-12190: Denial-of-service in block I/O page merging.

A failure to decrement a reference count when merging block I/O pages
can result in a memory leak. A local user could use this flaw to cause a
denial-of-service.


* CVE-2017-17712: Information leak in raw IPV4 socket sendmsg().

A race condition in the raw_sendmsg() call for IPV4 raw sockets could
allow a local user to leak the contents of kernel memory.


* Denial-of-service when shutting down iSCSI transport interface.

Logic errors when shutting down iSCSI transport interface without logging
out could cause a deadlock. A local attacker could use this flaw to
cause a denial-of-service.

SUPPORT

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