[Ksplice-cloudlinux6-updates] New Ksplice updates for CloudLinux 6 (2.6.32-954.3.5.lve1.4.66.el6)

[Oracle Ksplice]

Synopsis: 2.6.32-954.3.5.lve1.4.66.el6 can now be patched using Ksplice
CVEs: CVE-2019-11477 CVE-2019-11478 CVE-2019-11479

Systems running CloudLinux 6 can now use Ksplice to patch against the
latest CloudLinux 6 kernel update, 2.6.32-954.3.5.lve1.4.66.el6.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running CloudLinux 6
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-2019-11477, CVE-2019-11478, CVE-2019-11479: Remote Denial-of-service in TCP stack.

A number of errors in the TCP stack could result in a remotely
triggerable denial of service on links with a small Maximum Segment Size
(MSS).  A remote user could use a maliciously crafted TCP stream to
either panic the system or exhaust resources.

A new sysctl, ksplice_net_ipv4.tcp_min_snd_mss can be used to to adjust
the minimum Maximum Segment Size and defaults to 48 bytes.

SUPPORT

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