1. Ubuntu Security Notices
  2. USN-5853-1

USN-5853-1: Linux kernel vulnerabilities

Publication date

9 February 2023

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform bounds checking in some situations. A
physically proximate attacker could use this to craft a malicious USB
device that when inserted, could cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-3628)

It was discovered that a use-after-free vulnerability existed in the
Bluetooth stack in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3640)

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. (

It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform bounds checking in some situations. A
physically proximate attacker could use this to craft a malicious USB
device that when inserted, could cause a denial of service (system crash)
or possibly execute arbitrary code. (CVE-2022-3628)

It was discovered that a use-after-free vulnerability existed in the
Bluetooth stack in the Linux kernel. A local attacker could use this to
cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3640)

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 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)

Tamás Koczka discovered that the Bluetooth L2CAP implementation in the
Linux kernel did not properly initialize memory in some situations. A
physically proximate attacker could possibly use this to expose sensitive
information (kernel memory). (CVE-2022-42895)

It was discovered that the binder IPC 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-2023-20928)

Update instructions

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

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
20.04 focal linux-image-gkeop –  5.4.0.1064.62
linux-image-virtual –  5.4.0.139.137
linux-image-raspi2 –  5.4.0.1080.110
linux-image-generic –  5.4.0.139.137
linux-image-oem –  5.4.0.139.137
linux-image-5.4.0-1064-gkeop –  5.4.0-1064.68
linux-image-5.4.0-1080-raspi –  5.4.0-1080.91
linux-image-oem-osp1 –  5.4.0.139.137
linux-image-azure-lts-20.04 –  5.4.0.1103.96
linux-image-5.4.0-1086-kvm –  5.4.0-1086.92
linux-image-5.4.0-139-lowlatency –  5.4.0-139.156
linux-image-gkeop-5.4 –  5.4.0.1064.62
linux-image-5.4.0-1103-azure –  5.4.0-1103.109
linux-image-5.4.0-139-generic-lpae –  5.4.0-139.156
linux-image-5.4.0-1096-aws –  5.4.0-1096.104
linux-image-5.4.0-139-generic –  5.4.0-139.156
linux-image-5.4.0-1093-oracle –  5.4.0-1093.102
linux-image-aws-lts-20.04 –  5.4.0.1096.93
linux-image-oracle-lts-20.04 –  5.4.0.1093.86
linux-image-raspi –  5.4.0.1080.110
linux-image-kvm –  5.4.0.1086.80
linux-image-generic-lpae –  5.4.0.139.137
linux-image-lowlatency –  5.4.0.139.137
18.04 bionic linux-image-5.4.0-1103-azure –  5.4.0-1103.109~18.04.1
linux-image-5.4.0-1080-raspi –  5.4.0-1080.91~18.04.1
linux-image-azure –  5.4.0.1103.76
linux-image-raspi-hwe-18.04 –  5.4.0.1080.77

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References

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