[El-errata] New Ksplice updates for RHCK 6 (ELSA-2023-1822)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2023-1822 can now be patched using Ksplice
CVEs: CVE-2020-0466 CVE-2021-1048 CVE-2022-4378

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2023-1822.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-1822.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running RHCK 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-2022-4378: Privilege escalation in the proc filesystem.

Incorrect bounds checking and an integer overflow in the proc
filesystem could lead to out-of-bounds memory writes.  An unprivileged
user could use this flaw to cause a denial-of-service or elevate
privileges.


* Denial-of-service in InfiniBand driver due to an incorrect locking.

An incorrect locking algorithm in InfiniBand driver leads to a
deadlock under certain conditions. A local user can use this
flaw to cause denial-of-service.


* Improved update to CVE-2020-0466, CVE-2021-1048: Use-after-free in epoll subsystem.

Improper reference counting in the epoll subsystem could lead to a
use-after-free when file descriptors are concurrently removed from
an epoll instance. An unprivileged user could use this flaw to cause
a denial-of-service or escalate privileges.

SUPPORT

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