[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2020-5535)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2020-5535 can now be patched using Ksplice
CVEs: CVE-2019-11135 CVE-2019-17666 CVE-2019-19332

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5535.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2020-5535.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-2019-17666: Out-of-bounds access when using Realtek Wireless Network driver in P2P mode.

A logic error when using Realtek Wireless Network driver in P2P mode
could lead to an out-of-bounds access. A remote attacker within the
wireless radio range of the victim could use this flaw to cause a
denial-of-service.

Orabug: 30807748


* CVE-2019-19332: Denial-of-service in KVM cpuid emulation reporting.

A failure to correctly validate a request for KVM cpuid emulation
information a can lead to an out-of-bounds memory access, leading to a
kernel crash. A local user with the ability to use KVM could use this
flaw to cause a denial-of-service.

Orabug: 30658695


* Improved fix to CVE-2019-11135: Side-channel information leak in Intel TSX on late microcode update.

The original fix for CVE-2019-11135 would not correctly update the TSX
state on a late microcode update, potentially leaving the system
vulnerable.

Orabug: 30557086, 30528904


* Missing CPU vulnerability mitigations on late microcode update.

Incorrect handling of microcode specific mitigations could result in
failure to completely mitigate a number of CPU vulnerabilities.

Orabug: 30649400


* Denial-of-service in iSCSI IO vector mapping.

Missing validation when mapping an IO vector for an iSCSI transfer could
result in a NULL pointer dereference and kernel crash under specific
conditions.

Orabug: 30459537

SUPPORT

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