==========================================================================
Ubuntu Security Notice USN-5793-1
January 06, 2023

linux, linux-aws, linux-kvm, linux-lowlatency, linux-raspi vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.10

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-raspi: Linux kernel for Raspberry Pi systems

Details:

It was discovered that the io_uring subsystem in the Linux kernel did not
properly perform reference counting in some situations, leading to a use-
after-free vulnerability. A local attacker could use this to cause a denial
of service (system crash) or possibly execute arbitrary code.
(CVE-2022-3910)

It was discovered that a race condition existed in the Android Binder IPC
subsystem in the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-20421)

David Leadbeater discovered that the netfilter IRC protocol tracking
implementation in the Linux Kernel incorrectly handled certain message
payloads in some situations. A remote attacker could possibly use this to
cause a denial of service or bypass firewall filtering. (CVE-2022-2663)

It was discovered that the sound subsystem in the Linux kernel contained a
race condition in some situations. A local attacker could use this to cause
a denial of service (system crash). (CVE-2022-3303)

It was discovered that the Sunplus Ethernet driver in the Linux kernel
contained a read-after-free vulnerability. An attacker could possibly use
this to expose sensitive information (kernel memory) (CVE-2022-3541)

It was discovered that a memory leak existed in the Unix domain socket
implementation of the Linux kernel. A local attacker could use this to
cause a denial of service (memory exhaustion). (CVE-2022-3543)

It was discovered that the NILFS2 file system implementation in the Linux
kernel did not properly deallocate memory in certain error conditions. An
attacker could use this to cause a denial of service (memory exhaustion).
(CVE-2022-3544, CVE-2022-3646)

Gwnaun Jung discovered that the SFB packet scheduling implementation in the
Linux kernel contained a use-after-free vulnerability. A local attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2022-3586)

It was discovered that the hugetlb implementation in the Linux kernel
contained a race condition in some situations. A local attacker could use
this to cause a denial of service (system crash) or expose sensitive
information (kernel memory). (CVE-2022-3623)

Khalid Masum discovered that the NILFS2 file system implementation in the
Linux kernel did not properly handle certain error conditions, leading to a
use-after-free vulnerability. A local attacker could use this to cause a
denial of service or possibly execute arbitrary code. (CVE-2022-3649)

It was discovered that a race condition existed in the MCTP implementation
in the Linux kernel, leading to a use-after-free vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-3977)

It was discovered that a race condition existed in the EFI capsule loader
driver in the Linux kernel, leading to a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-40307)

Zheng Wang and Zhuorao Yang discovered that the RealTek RTL8712U wireless
driver in the Linux kernel contained a use-after-free vulnerability. A
local attacker could use this to cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-4095)

It was discovered that a race condition existed in the SMSC UFX USB driver
implementation in the Linux kernel, leading to a use-after-free
vulnerability. A physically proximate attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-41849)

It was discovered that a race condition existed in the Roccat HID driver in
the Linux kernel, leading to a use-after-free vulnerability. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-41850)

It was discovered that the USB monitoring (usbmon) component in the Linux
kernel did not properly set permissions on memory mapped in to user space
processes. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2022-43750)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 22.10:
   linux-image-5.19.0-1011-raspi   5.19.0-1011.18
   linux-image-5.19.0-1011-raspi-nolpae  5.19.0-1011.18
   linux-image-5.19.0-1014-lowlatency  5.19.0-1014.15
   linux-image-5.19.0-1014-lowlatency-64k  5.19.0-1014.15
   linux-image-5.19.0-1015-kvm     5.19.0-1015.16
   linux-image-5.19.0-1016-aws     5.19.0-1016.17
   linux-image-5.19.0-28-generic   5.19.0-28.29
   linux-image-5.19.0-28-generic-64k  5.19.0-28.29
   linux-image-5.19.0-28-generic-lpae  5.19.0-28.29
   linux-image-aws                 5.19.0.1016.13
   linux-image-generic             5.19.0.28.25
   linux-image-generic-64k         5.19.0.28.25
   linux-image-generic-64k-hwe-22.04  5.19.0.28.25
   linux-image-generic-hwe-22.04   5.19.0.28.25
   linux-image-generic-lpae        5.19.0.28.25
   linux-image-generic-lpae-hwe-22.04  5.19.0.28.25
   linux-image-kvm                 5.19.0.1015.12
   linux-image-lowlatency          5.19.0.1014.11
   linux-image-lowlatency-64k      5.19.0.1014.11
   linux-image-lowlatency-64k-hwe-22.04  5.19.0.1014.11
   linux-image-lowlatency-hwe-22.04  5.19.0.1014.11
   linux-image-oem-22.04           5.19.0.28.25
   linux-image-raspi               5.19.0.1011.10
   linux-image-raspi-nolpae        5.19.0.1011.10
   linux-image-virtual             5.19.0.28.25
   linux-image-virtual-hwe-22.04   5.19.0.28.25

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed.
Unless you manually uninstalled the standard kernel metapackages
(e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual,
linux-powerpc), a standard system upgrade will automatically perform
this as well.

References:
   https://ubuntu.com/security/notices/USN-5793-1
   CVE-2022-20421, CVE-2022-2663, CVE-2022-3303, CVE-2022-3541,
   CVE-2022-3543, CVE-2022-3544, CVE-2022-3586, CVE-2022-3623,
   CVE-2022-3646, CVE-2022-3649, CVE-2022-3910, CVE-2022-3977,
   CVE-2022-40307, CVE-2022-4095, CVE-2022-41849, CVE-2022-41850,
   CVE-2022-43750

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.19.0-28.29
   https://launchpad.net/ubuntu/+source/linux-aws/5.19.0-1016.17
   https://launchpad.net/ubuntu/+source/linux-kvm/5.19.0-1015.16
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.19.0-1014.15
   https://launchpad.net/ubuntu/+source/linux-raspi/5.19.0-1011.18