[El-errata] New Ksplice updates for UEKR4 4.1.12 on OL6 and OL7 (ELSA-2022-9088)

[Errata Announcements for Oracle Linux]

Synopsis: ELSA-2022-9088 can now be patched using Ksplice
CVEs: CVE-2017-11176 CVE-2021-0129 CVE-2021-20321 CVE-2021-3752 
CVE-2021-3753 CVE-2021-4034

Users with Oracle Linux Premier Support can now use Ksplice to patch
against the latest Oracle Linux Security Advisory, ELSA-2022-9088.
More information about this errata can be found at
https://linux.oracle.com/errata/ELSA-2022-9088.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-2021-4034: Privilege escalation in pkexec.

Incorrect input validation in the pkexec program (part of Polkit) allows
any local user to become root.


* CVE-2021-20321: Race condition in OverlayFS.

A possible race condition exists in overlayfs that may be triggered
when a user renames a file.  A local user could use this flaw to cause
a denial-of-service.

Orabug: 33694378


* CVE-2021-3753: information disclosure in virtual terminal device.

A race condition flaw in its ioctl handling of the virtual terminal
device implementation could lead to out-of-bounds reads. A local user
could use this flaw for information disclosure.

Orabug: 33406445


* CVE-2021-0129: Man-in-the-middle disclosure of bluetooth passkey.

The kernel bluetooth pairing process contains a flaw that might allow a
malicious nearby device to determine the passkey used to complete the
pairing, or potential pair itself instead.

Orabug: 33556779


* CVE-2021-3752: Use-after-free in the Bluetooth subsystem.

A use-after-free exists in the Bluetooth subsystem in the way a user 
connects
and disconnects from a socket.  A local unprivileged user could use this 
flaw
to cause a denial-of-service or potentially escalate privileges.

Orabug: 33406421

SUPPORT

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