[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2020-5642)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2020-5642 can now be patched using Ksplice
CVEs: CVE-2019-18806 CVE-2020-10942

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5642.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5642.html

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-2019-18806: Memory leak when allocating large buffers in QLogic QLA3XXX Network driver.

A missing free of resources when allocating large buffers in QLogic
QLA3XXX Network driver could lead to a memory leak. A local attacker
could use this flaw to exhaust kernel memory and cause a
denial-of-service.

Orabug: 31055327


* NULL dereference while writing Hyper-V SINT14 MSR.

It is possible for KVM's IOAPIC scan logic to be triggered
inappropriately when attempting to write to Hyper-V's SINT14 MSR.
If an IOAPIC has not been initialized, this can lead to a NULL
dereference, and subsequent kernel panic.  This could be used
to cause a denial-of-service.

Orabug: 31078882


* CVE-2020-10942: Out-of-bounds memory access in the Virtual host driver.

Invalid input validation could lead to type confusion and out-of-bounds
memory accesses.  A local unprivileged user could use this to cause a
denial-of-service or potentially escalate privileges.

Orabug: 31085993

SUPPORT

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