El-errata: New Ksplice updates for RHCK 9 (5.14.0-70.26.1.el9_0)

Synopsis: 5.14.0-70.26.1.el9_0 can now be patched using Ksplice CVEs: CVE-2022-1972 CVE-2022-34918 CVE-2022-21499

Users with Oracle Linux Premier Support can now use Ksplice to patch against the latest Oracle kernel update, 5.14.0-70.26.1.el9_0.
INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running RHCK 9 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-2022-34918: Privilege escalation in Netfilter subsystem.
A type mismatch flaw in Netfilter subsystem when adding a new element to NFT table could result in a buffer overflow. A local user could use this flaw to escalate privileges.

* CVE-2022-1972: Unchecked netfilter field desc allows out-of-bounds write.
Missing validation of netfilter field desc structures could allow for an out-of-bounds write. A malicious user could exploit this to escalate their privileges or execute arbitrary code.

* CVE-2022-21499: Kernel Lockdown bypass.

The kernel does not prevent use of the kernel debugger (kgdb) while in lockdown mode. An attacker with access to a serial port during lockdown could use this flaw to obtain read and write access to kernel memory, thus rendering the lockdown feature ineffective.

SUPPORT

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