[Ksplice][Ubuntu-20.04-Updates] New Ksplice updates for Ubuntu 20.04 Focal (USN-7461-1)

[Oracle Ksplice]

Synopsis: USN-7461-1 can now be patched using Ksplice
CVEs: CVE-2024-46826 CVE-2024-49974 CVE-2024-50256 CVE-2025-21700 CVE-2025-21702 CVE-2025-21703

Systems running Ubuntu 20.04 Focal can now use Ksplice to patch
against the latest Ubuntu Security Notice, USN-7461-1.

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-2024-46826: Undefined behavior in kernel ELF parsing subsystem.

A logic error when using the kernel ELF parsing subsystem. could lead to
an inconsistently loaded binary. The resulting loaded binary might exhibit
undefined behavior.


* CVE-2024-50256: Denial-of-service in IPv6 packet rejection driver.

A logic error when using the IPv6 packet rejection driver could lead to
a kernel assertion failure. A local attacker could use this flaw to
cause a denial-of-service.


* CVE-2025-21700: Privilege escalation in QoS and/or fair queueing driver.

A logic error when using the QoS and/or fair queueing driver could lead
to a use-after-free. A local attacker could use this flaw to gain root
privileges.


* CVE-2025-21702: Privilege escalation in QoS and/or fair queueing driver.

A logic error when using the QoS and/or fair queueing driver could lead
to a use-after-free. A local attacker could use this flaw to gain root
privileges.


* CVE-2025-21703: Privilege escalation in network emulator.

A logic error when using the network emulator could lead to a
use-after-free. A local attacker could use this flaw to escalate
privileges.


* Note: Oracle will not provide a zero-downtime update for CVE-2024-49974.

Oracle has determined that patching CVE-2024-49974 on a running system
would not be safe and recommends a reboot.

SUPPORT

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