[El-errata] New Ksplice updates for RHCK 7 (ELSA-2019-0818)

Errata Announcements for Oracle Linux el-errata at oss.oracle.com
Thu Apr 25 06:28:14 PDT 2019

Synopsis: ELSA-2019-0818 can now be patched using Ksplice
CVEs: CVE-2019-6974 CVE-2019-7221

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-0818.
More information about this errata can be found at


We recommend that all users of Ksplice Uptrack running RHCK 7 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


* CVE-2019-7221: Use-after-free in nested KVM preemption timer.

A failure to cancel a nested KVM timer before freeing it can result in a
use-after-free. A guest VM could use this flaw to crash the host.

* CVE-2019-6974: Use-after-free in KVM device creation.

A reference count manipulation error when creating a KVM device can result in
an early free, leading to a use-after-free. A local user with access to KVM
could use this flaw to cause a kernel crash or potentially escalate privileges.


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

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