[Ksplice][Ubuntu-20.04-Updates] New Ksplice updates for Ubuntu 20.04 Focal (USN-6625-1)

[Oracle Ksplice]

Synopsis: USN-6625-1 can now be patched using Ksplice
CVEs: CVE-2020-26555 CVE-2023-34324 CVE-2023-35827 CVE-2023-45863 CVE-2023-46343

Systems running Ubuntu 20.04 Focal can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-6625-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 20.04
Focal 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

* Note: Oracle has determined that CVE-2023-35827 is not applicable.

The kernel is not affected by CVE-2023-35827 since the code under
consideration is not compiled.


* CVE-2020-26555: Permission bypass from an unauthorized nearby Bluetooth device.

Bluetooth legacy BR/EDR PIN code pairing in Bluetooth Core Specification
1.0B through 5.2 may permit an unauthenticated nearby device to spoof
the BD_ADDR of the peer device to complete pairing without knowledge
of the PIN.


* Note: Oracle will not provide a zero-downtime update for CVE-2023-34324.

Oracle has determined that patching CVE-2023-34324 on a running system
would not be safe and recommends a reboot.


* CVE-2023-45863: Out-of-bounds write in a library routine for handling generic kernel objects.

A race condition when performing operations with kernel objects
could lead to an out-of-bounds write. A privileged local user
could use this flaw to cause a denial-of-service or execute
arbitrary code.


* CVE-2023-46343: Denial-of-service in NFC Controller Interface.

The NFC Controller Interface (NCI) implementation did not properly
handle certain memory allocation failure conditions, which could
lead to a null pointer dereference. A local attacker could use
this flaw to cause a denial-of-service.

SUPPORT

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