[El-errata] New Ksplice updates for RHCK 7 (ELSA-2019-3979)
Errata Announcements for Oracle Linux
el-errata at oss.oracle.com
Mon Dec 23 09:56:17 PST 2019
Synopsis: ELSA-2019-3979 can now be patched using Ksplice
CVEs: CVE-2019-14821 CVE-2019-15239
Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2019-3979.
More information about this errata can be found at
INSTALLING THE UPDATES
We recommend that all users of Ksplice Uptrack running RHCK 7 install
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-2019-14821: Denial-of-service in KVM MMIO coalesced writes.
An out-of-bounds access to the coalesced MMIO ring buffer could result
in a kernel crash. A malicious guest could use this flaw to crash the
hypervisor or potentially, escalate privileges.
* Improved fix for CVE-2019-15239: Use-after-free in TCP write queue
A failure to properly zero out pointers to freed memory in the
tcp_write_queue_purge function can lead to a use-after-free scenario.
This could potentially cause a system to exhibit unexpected behavior,
and could lead to a denial-of-service.
Ksplice support is available at ksplice-support_ww at oracle.com.
More information about the El-errata