[Ksplice][Ubuntu-20.04-Updates] New Ksplice updates for Ubuntu 20.04 Focal (USN-5442-1)

[Oracle Ksplice]

Synopsis: USN-5442-1 can now be patched using Ksplice
CVEs: CVE-2022-1116 CVE-2022-29581 CVE-2022-30594

Systems running Ubuntu 20.04 Focal can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-5442-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 20.04
Focal 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-2022-30594: Privilege escalation in Process Trace.

Lack of validation of the ptrace flags when seizing a process through
ptrace could be used to disable a seccomp jail. A local, unprivileged
user could use this flaw to evade a seccomp jail and elevate their
privileges.


* CVE-2022-29581: Privilege escalation in Traffic Control subsystem.

Improper reference counting flaw in the universal 32-bit pieces based
comparison scheme for packet classification of Traffic Control subsystem
could lead to a use-after-free. A local user could use this flaw for
privilege escalation.


* CVE-2022-1116: Code execution in IO uring support.

An integer overflow flaw in sending data path of IO uring support could
result in memory corruption. A local user could use this flaw to cause
a denial-of-service or execute arbitrary code.

SUPPORT

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