[El-errata] New Ksplice updates for UEKR3 3.8.13 on OL6 and OL7 (ELSA-2017-3606)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2017-3606 can now be patched using Ksplice
CVEs: CVE-2016-10200 CVE-2016-9604 CVE-2016-9685 CVE-2017-1000365 CVE-2017-9242

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2017-3606.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR3 3.8.13 on
OL6 and OL7 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-2017-9242: Denial-of-service when using send syscall of IPV6 socket.

A missing check when sending messages over IPV6 sockets could lead to an
out-of-bound access. A local user could use this flaw to cause a
denial-of-service.


* CVE-2016-9604: Permission bypass when creating key using keyring subsystem.

A missing check when an user create a key beginning with '.' could lead
to a permission bypass. A local attacker could use this flaw to access
sensitive information.


* CVE-2016-9685: Memory leak in XFS filesystem operations.

Multiple memory leaks in error paths in fs/xfs/xfs_attr_list.c in the
Linux kernel before 4.5.1 allow local users to cause a denial of service
(memory consumption) via crafted XFS filesystem operations.


* CVE-2016-10200: Denial-of-service when creating L2TP sockets using concurrent thread.

A missing check when creating L2TP socket could lead to a use-after-free
if a concurrent thread modify socket's flag while creating it. An attacker
could use this flaw to cause a denial-of-service.


* CVE-2017-1000365: Privilege escalation when performing exec.

A logic error allows an unprivileged local user to bypass argument and
environmental string size limits when performing an exec syscall. A
local user could use this flaw to bypass guard pages between the stack
and another mapping, leading to potential privilege escalation.

SUPPORT

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