[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2023-12970)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2023-12970 can now be patched using Ksplice
CVEs: CVE-2023-40283 CVE-2023-4208 CVE-2023-4911

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2023-12970.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2023-12970.html

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running UEKR4 4.1.12 on
OL6 and OL7 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-2023-4911: Buffer overflow in the GNU C Library's dynamic loader while processing environment variables.

Incorrect processing of environment variables in the GNU C Library's
dynamic loader ld.so can result in buffer overflow. This flaw could
allow a local attacker to elevate their privileges when launching
binaries with SUID permission.


* Improved fix for CVE-2023-4911: Buffer overflow in the GNU C Library's dynamic loader while processing environment variables.

Incorrect processing of environment variables in the GNU C Library's
dynamic loader ld.so can result in buffer overflow. This flaw could
allow a local attacker to elevate their privileges when launching
binaries with SUID permission.


* CVE-2023-40283: Use-after-free during Bluetooth socket teardown.

An incomplete cleanup operation when tearing down Bluetooth L2CAP
sockets can lead to a use-after-free.  This flaw could potentially be
exploited to cause a denial-of-service or other unexpected behavior.

Orabug: 35814478


* CVE-2023-4208: Use-after-free when modifying Netfilter U32/route filters.

A logic error when copying an internal memory structure can lead to a
use-after-free when modifying certain Netfilter filters.  A local
attacker could exploit this flaw to escalate their privileges.

Orabug: 35814297


* Denial-of-service in the RDMA driver on hardware errors.

A missing NULL pointer check when dequeueing MAD packets after hardware
errors could lead to a denial-of-service.

Orabug: 35723252

SUPPORT

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