[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2018-4084)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2018-4084 can now be patched using Ksplice
CVEs: CVE-2017-12146 CVE-2017-16643 CVE-2017-16645 CVE-2017-17558 CVE-2018-1093

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2018-4084.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 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-2017-12146: Privilege escalation using a sysfs entry from platform driver.

Incorrect locking when using 'driver_override' entry of platform driver
sysfs could lead to a race condition. A local attacker could use this
flaw to escalate privilege.

Orabug: 27897874


* CVE-2017-17558: Buffer overrun in USB core via integer overflow.

Failing to sanitize the bNumInterfaces field in a USB device descriptor
could allow a malicious device to induce a buffer overrun, potentially
causing a denial-of-service.

Orabug: 27895909


* CVE-2017-16645: Out-of-bounds access when using IMS Passenger Control Unit
Devices.

A missing check when using IMS Passenger Control Unit Devices could
lead to an out-of-bounds access. A local attacker could use this flaw to
cause a denial-of-service.

Orabug: 27870333


* CVE-2017-16643: Out-of-bounds access in GTCO CalComp/InterWrite USB tablet HID
parsing.

A validation failure when parsing a HID report from a GTCO
CalComp/InterWrite USB tablet can result in an out-of-bounds memory
access. A user with physical access to a system could use this flaw to
cause undefined behaviour or potentially escalate privileges.

Orabug: 27869844


* CVE-2018-1093: Denial-of-service in ext4 bitmap block validity check.

A failure to correctly validate bitmap information from an ext4
filesystem can result in an out-of-bounds read, leading to a Kernel
crash. A local user with the ability to mount an ext4 filesystem could
use this flaw to cause a denial-of-service.

Orabug: 27854373


* Failure to initialize USB3 storage devices.

A logic error when initializing USB devices can result in USB3 storage
devices being unmountable.

Orabug: 27908746

SUPPORT

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