[Ksplice][Ubuntu-20.04-Updates] New Ksplice updates for Ubuntu 20.04 Focal (USN-5853-1)

[Oracle Ksplice]

Synopsis: USN-5853-1 can now be patched using Ksplice
CVEs: CVE-2021-26932 CVE-2022-3628 CVE-2022-3649 CVE-2022-41849 CVE-2022-41850 CVE-2022-42895

Systems running Ubuntu 20.04 Focal can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-5853-1.

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

* CVE-2022-42895: Information disclosure in Bluetooth subsystem.

A missing sanity check when parsing a configuration request in Bluetooth
L2CAP implementation could result in out-of-bounds memory access.
A physically proximate attacker could use this flaw for information
disclosure.


* CVE-2022-41850: Use-after-free in Roccat support driver.

A race condition in Roccat support driver may lead to a
read-after-free. A local user could use this flaw to gain
sensitive information as a part of another type of attack.


* Improved update to CVE-2021-26932, XSA-361: Denial-of-host-service by malicious Xen frontend.

Batched mapping operations can be potentially mishandled by the Linux
Xen backend, resulting in incorrectly reported success or failure of the
operation. Running a malicious or buggy frontend could result in a
denial-of-service on the host.


* CVE-2022-3628: Code execution in Broadcom FullMAC USB WiFi driver.

A missing sanity check when setting up the Broadcom FullMAC USB WiFi
driver could result in out-of-bounds access. A physically proximate
user could use this flaw to craft a malicious USB device and cause
a denial-of-service or execute arbitrary code.


* Information leak in Transparent Inter Process Communication (TIPC) protocol.

A logic error in TIPC protocol during socket initialization can lead to
kernel information leak. A local user could use this flaw to gain access
to sensitive information.


* CVE-2022-3649: Use-after-free in NILFS2 file system.

A missing sanity check in nilfs2 when handling corrupted on-disk
filesystem data could lead to a use-after-free. An attacker could use
this flaw to cause a denial-of-service or escalate privileges.


* CVE-2022-41849: Use-after-free when removing USB fbdev device.

A race condition in the fbdev USB video device driver between activating
and deactivating the device could result in a NULL-pointer dereference.
A malicious device might exploit this to cause a denial-of-service.

SUPPORT

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