[El-errata] New Ksplice updates for UEKR6 5.4.17 on OL7 and OL8 (ELSA-2022-9425)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2022-9425 can now be patched using Ksplice
CVEs: CVE-2022-1786 CVE-2022-21499

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2022-9425.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2022-9425.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR6 5.4.17 on
OL7 and OL8 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-2022-1786: Information disclosure in io_uring IO interface.

A logic flaw in io_uring IO interface when more than one task performing
asynchronous IO submissions on a ring could result in assignment of
the context from the current task rather than from the request
originator. A local user could use this flaw for information disclosure.

Orabug: 34186552


* CVE-2022-21499: Privilege escalation in the kernel debug subsystem.

Insufficient protection checks in the kernel debug subsystem when using KGDB
and KDB allow reads and writes to kernel memory during kernel lockdown. A
remote attacker with access to a serial port (for example, via a hypervisor
console) could use the debugger to escalate privileges.

Orabug: 34152699

SUPPORT

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