[Ksplice][Ubuntu-21.04-Updates] New Ksplice updates for Ubuntu 21.04 Hirsute (USN-5046-1)

[Oracle Ksplice]

Synopsis: USN-5046-1 can now be patched using Ksplice
CVEs: CVE-2020-14304 CVE-2021-0129 CVE-2021-28691 CVE-2021-3564 CVE-2021-3573 CVE-2021-3587 CVE-2021-38198

Systems running Ubuntu 21.04 Hirsute can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-5046-1.

INSTALLING THE UPDATES

We recommend that all users of Ksplice Uptrack running Ubuntu 21.04
Hirsute 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-2020-14304: Information leak during Mellanox card EEPROM dump.

A flaw in the kernel's EEPROM dump functionality for Mellanox cards
can be used to read arbitrary uninitialized values from kernel
memory.  This flaw could be exploited by a local attacker, with
sufficient privileges, to leak information about the running system.


* CVE-2021-3564: Use-after-free when initializing bluetooth HCI device.

A flaw in the bluetooth Host Controller Interface handling could result
in a use-after-free if a device fails initialization. A malicious local
device or user might exploit this to cause a denial-of-service.


* CVE-2021-3587: Denial-of-service when calling sockname() on NFC socket.

If an NFC socket fails to bind, calling getsockname() will result in a
NULL pointer deference. A local, unprivileged user might exploit this to
cause a denial-of-service.


* CVE-2021-3573: Code execution in the bluetooth subsystem due to use-after-free.

Improper handling of HCI device detach events in the bluetooth subsystem
could leading to a use-after-free. A local user could use this flaw to
cause a denial of service or possibly execute arbitrary code.


* 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.


* CVE-2021-28691: Denial-of-service in Xen network driver.

A logic error when using Xen network driver could lead to a
use-after-free in the backend driver. A malicious DOMU guest could use
this flaw to cause a denial-of-service in DOM0 or escalate privileges.


* CVE-2021-38198: Denial-of-service when using shadow paging with KVM guests.

A missing check when using shadow paging with KVM guests could lead to a
page fault. 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.