[Ksplice][EL8-Updates] New Ksplice updates for OL 8 and RHEL 8 (ELSA-2023-4517)

[Oracle Ksplice]

Synopsis: ELSA-2023-4517 can now be patched using Ksplice
CVEs: CVE-2022-42896 CVE-2023-1281 CVE-2023-1829 CVE-2023-2124 CVE-2023-2194 CVE-2023-2235

Systems running RHCK on Oracle Linux 8 and Red Hat Enterprise Linux 8
can now use Ksplice to patch against the latest Red Hat kernel update,
ELSA-2023-4517.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-4517.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running OL 8 and RHEL 8
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-2023-2235: Use-after-free in Performance Events subsystem.

Incorrect logic in the kernel's Performance Events subsystem can lead to a
use-after-free. This can allow a local user to escalate privileges.


* CVE-2023-2194: Insufficient input validation in APM X-Gene SoC I2C SLIMpro.

Insufficient user input validation in the APM X-Gene SoC I2C SLIMpro device
driver could allow writing beyond the end of a buffer. This could allow a
local privileged user to crash the system or execute incorrect code.


* CVE-2023-2124: Denial-of-service in XFS file system during image restoration.

Insufficient checks in XFS during image restoration after a failure
with a dirty log journal can lead to out-of-bounds memory access flaw.
A local attacker can use this flaw to cause denial-of-service or to
escalate their privileges.


* CVE-2023-1829, CVE-2023-1281: Multiple vulnerabilities in tcindex.

Various flaws in the tcindes filter can lead to a double-free. This
module should therefore be considered insecure and unusable.


* CVE-2022-42896: Use-after-free in Bluetooth L2CAP.

A flaw in Bluetooth L2CAP protocol when accepting incoming connection
requests could lead to a use-after-free. A remote attacker could use
this flaw for a denial-of-service or for privilege escalation.

SUPPORT

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