[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2020-5508)
Errata Announcements for Oracle Linux
el-errata at oss.oracle.com
Fri Jan 10 10:40:26 PST 2020
Synopsis: ELSA-2020-5508 can now be patched using Ksplice
CVEs: CVE-2017-18595 CVE-2019-15807 CVE-2019-16233
Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2020-5508.
More information about this errata can be found at
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
* Enablement for applying custom alternative instructions.
This is required to workaround inconsistencies in the way alternative
instructions are applied to a running kernel.
* CVE-2019-16233: NULL pointer dereference when registering QLogic Fibre Channel driver.
A missing check when registering QLogic Fibre Channel driver fails could
lead to a NULL pointer dereference. A local attacker could use this flaw
to cause a denial-of-service.
* CVE-2019-15807: Denial-of-service when discovering expander in SAS Domain Transport Attributes fails.
A logic error when discovering expander in SAS Domain Transport
Attributes fails could lead to a kernel assert. A local attacker could
use this flaw to cause a denial-of-service.
* CVE-2017-18595: Use-after-free in kernel trace buffer allocation.
Incorrect error handling when allocating a kernel trace buffer could
result in a double free and kernel crash. A local, privileged user
could use this flaw to trigger a denial of service.
Ksplice support is available at ksplice-support_ww at oracle.com.
More information about the El-errata