1. Ubuntu Security Notices
  2. USN-5755-1

USN-5755-1: Linux kernel vulnerabilities

Publication date

1 December 2022

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

Details

It was discovered that the NFSD implementation in the Linux kernel did not
properly handle some RPC messages, leading to a buffer overflow. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-43945)

Jann Horn discovered that the Linux kernel did not properly track memory
allocations for anonymous VMA mappings in some situations, leading to
potential data structure reuse. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-42703)

It was discovered that a memory leak existed in the IPv6 implementation of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2022-3524)

It was discovered that a race condition existed in the...

It was discovered that the NFSD implementation in the Linux kernel did not
properly handle some RPC messages, leading to a buffer overflow. A remote
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2022-43945)

Jann Horn discovered that the Linux kernel did not properly track memory
allocations for anonymous VMA mappings in some situations, leading to
potential data structure reuse. A local attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-42703)

It was discovered that a memory leak existed in the IPv6 implementation of
the Linux kernel. A local attacker could use this to cause a denial of
service (memory exhaustion). (CVE-2022-3524)

It was discovered that a race condition existed in the Bluetooth 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-2022-3564)

It was discovered that the ISDN implementation of the Linux kernel
contained a use-after-free vulnerability. A privileged user could use this
to cause a denial of service (system crash) or possibly execute arbitrary
code. (CVE-2022-3565)

It was discovered that the TCP implementation in the Linux kernel contained
a data race condition. An attacker could possibly use this to cause
undesired behaviors. (CVE-2022-3566)

It was discovered that the IPv6 implementation in the Linux kernel
contained a data race condition. An attacker could possibly use this to
cause undesired behaviors. (CVE-2022-3567)

It was discovered that the Realtek RTL8152 USB Ethernet adapter driver in
the Linux kernel did not properly handle certain error conditions. A local
attacker with physical access could plug in a specially crafted USB device
to cause a denial of service (memory exhaustion). (CVE-2022-3594)

It was discovered that a null pointer dereference existed in the NILFS2
file system implementation in the Linux kernel. A local attacker could use
this to cause a denial of service (system crash). (CVE-2022-3621)

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
22.04 jammy linux-image-gkeop –  5.15.0.1011.10
linux-image-virtual –  5.15.0.56.54
linux-image-5.15.0-56-lowlatency –  5.15.0-56.62
linux-image-aws –  5.15.0.1026.24
linux-image-5.15.0-1011-gkeop –  5.15.0-1011.15
linux-image-lowlatency-64k-hwe-22.04 –  5.15.0.56.49
linux-image-generic-64k-hwe-22.04 –  5.15.0.56.54
linux-image-5.15.0-56-generic –  5.15.0-56.62
linux-image-kvm –  5.15.0.1024.22
linux-image-5.15.0-1021-ibm –  5.15.0-1021.24
linux-image-intel-iotg –  5.15.0.1021.20
linux-image-generic-64k –  5.15.0.56.54
linux-image-5.15.0-1021-raspi-nolpae –  5.15.0-1021.23
linux-image-gcp –  5.15.0.1025.20
linux-image-gkeop-5.15 –  5.15.0.1011.10
linux-image-generic-lpae-hwe-22.04 –  5.15.0.56.54
linux-image-5.15.0-1021-raspi –  5.15.0-1021.23
linux-image-generic-lpae –  5.15.0.56.54
linux-image-lowlatency –  5.15.0.56.49
linux-image-ibm –  5.15.0.1021.17
linux-image-aws-lts-22.04 –  5.15.0.1026.24
linux-image-5.15.0-56-lowlatency-64k –  5.15.0-56.62
linux-image-5.15.0-1025-oracle –  5.15.0-1025.31
linux-image-oracle –  5.15.0.1025.20
linux-image-raspi –  5.15.0.1021.18
linux-image-5.15.0-56-generic-64k –  5.15.0-56.62
linux-image-5.15.0-1021-intel-iotg –  5.15.0-1021.26
linux-image-5.15.0-1024-kvm –  5.15.0-1024.29
linux-image-generic –  5.15.0.56.54
linux-image-5.15.0-56-generic-lpae –  5.15.0-56.62
linux-image-5.15.0-1026-aws –  5.15.0-1026.30
linux-image-lowlatency-hwe-22.04 –  5.15.0.56.49
linux-image-virtual-hwe-22.04 –  5.15.0.56.54
linux-image-generic-hwe-22.04 –  5.15.0.56.54
linux-image-raspi-nolpae –  5.15.0.1021.18
linux-image-5.15.0-1025-gcp –  5.15.0-1025.32
linux-image-lowlatency-64k –  5.15.0.56.49
20.04 focal linux-image-virtual-hwe-20.04 –  5.15.0.56.62~20.04.22
linux-image-5.15.0-56-lowlatency –  5.15.0-56.62~20.04.1
linux-image-5.15.0-56-generic-lpae –  5.15.0-56.62~20.04.1
linux-image-aws –  5.15.0.1026.30~20.04.16
linux-image-5.15.0-1026-aws –  5.15.0-1026.30~20.04.2
linux-image-lowlatency-hwe-20.04 –  5.15.0.56.62~20.04.20
linux-image-5.15.0-56-generic –  5.15.0-56.62~20.04.1
linux-image-generic-hwe-20.04 –  5.15.0.56.62~20.04.22
linux-image-5.15.0-56-lowlatency-64k –  5.15.0-56.62~20.04.1
linux-image-lowlatency-64k-hwe-20.04 –  5.15.0.56.62~20.04.20
linux-image-5.15.0-1025-oracle –  5.15.0-1025.31~20.04.2
linux-image-oracle –  5.15.0.1025.31~20.04.1
linux-image-generic-lpae-hwe-20.04 –  5.15.0.56.62~20.04.22
linux-image-generic-64k-hwe-20.04 –  5.15.0.56.62~20.04.22
linux-image-5.15.0-56-generic-64k –  5.15.0-56.62~20.04.1

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References

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