==========================================================================
Ubuntu Security Notice USN-5756-1
December 01, 2022

linux, linux-aws, linux-aws-5.4, linux-gcp, linux-gcp-5.4, linux-gkeop,
linux-hwe-5.4, linux-ibm, linux-ibm-5.4, linux-kvm, linux-oracle,
linux-oracle-5.4, linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

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-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-gcp-5.4: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems
- linux-raspi-5.4: Linux kernel for Raspberry Pi systems

Details:

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:

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1040-ibm      5.4.0-1040.45
   linux-image-5.4.0-1060-gkeop    5.4.0-1060.64
   linux-image-5.4.0-1077-raspi    5.4.0-1077.88
   linux-image-5.4.0-1082-kvm      5.4.0-1082.88
   linux-image-5.4.0-1090-oracle   5.4.0-1090.99
   linux-image-5.4.0-1092-aws      5.4.0-1092.100
   linux-image-5.4.0-1096-gcp      5.4.0-1096.105
   linux-image-5.4.0-135-generic   5.4.0-135.152
   linux-image-5.4.0-135-generic-lpae  5.4.0-135.152
   linux-image-5.4.0-135-lowlatency  5.4.0-135.152
   linux-image-aws-lts-20.04       5.4.0.1092.89
   linux-image-gcp-lts-20.04       5.4.0.1096.98
   linux-image-generic             5.4.0.135.133
   linux-image-generic-lpae        5.4.0.135.133
   linux-image-gkeop               5.4.0.1060.58
   linux-image-gkeop-5.4           5.4.0.1060.58
   linux-image-ibm                 5.4.0.1040.66
   linux-image-ibm-lts-20.04       5.4.0.1040.66
   linux-image-kvm                 5.4.0.1082.76
   linux-image-lowlatency          5.4.0.135.133
   linux-image-oem                 5.4.0.135.133
   linux-image-oem-osp1            5.4.0.135.133
   linux-image-oracle-lts-20.04    5.4.0.1090.84
   linux-image-raspi               5.4.0.1077.107
   linux-image-raspi2              5.4.0.1077.107
   linux-image-virtual             5.4.0.135.133

Ubuntu 18.04 LTS:
   linux-image-5.4.0-1040-ibm      5.4.0-1040.45~18.04.2
   linux-image-5.4.0-1077-raspi    5.4.0-1077.88~18.04.2
   linux-image-5.4.0-1090-oracle   5.4.0-1090.99~18.04.2
   linux-image-5.4.0-1092-aws      5.4.0-1092.100~18.04.2
   linux-image-5.4.0-1096-gcp      5.4.0-1096.105~18.04.2
   linux-image-5.4.0-135-generic   5.4.0-135.152~18.04.2
   linux-image-5.4.0-135-generic-lpae  5.4.0-135.152~18.04.2
   linux-image-5.4.0-135-lowlatency  5.4.0-135.152~18.04.2
   linux-image-aws                 5.4.0.1092.69
   linux-image-gcp                 5.4.0.1096.72
   linux-image-generic-hwe-18.04   5.4.0.135.152~18.04.110
   linux-image-generic-lpae-hwe-18.04  5.4.0.135.152~18.04.110
   linux-image-ibm                 5.4.0.1040.51
   linux-image-lowlatency-hwe-18.04  5.4.0.135.152~18.04.110
   linux-image-oem                 5.4.0.135.152~18.04.110
   linux-image-oem-osp1            5.4.0.135.152~18.04.110
   linux-image-oracle              5.4.0.1090.99~18.04.64
   linux-image-raspi-hwe-18.04     5.4.0.1077.74
   linux-image-snapdragon-hwe-18.04  5.4.0.135.152~18.04.110
   linux-image-virtual-hwe-18.04   5.4.0.135.152~18.04.110

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-5756-1
   CVE-2022-3524, CVE-2022-3564, CVE-2022-3565, CVE-2022-3566,
   CVE-2022-3567, CVE-2022-3594, CVE-2022-3621, CVE-2022-42703

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-135.152
   https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1092.100
   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1096.105
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1060.64
   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1040.45
   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1082.88
   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1090.99
   https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1077.88
   https://launchpad.net/ubuntu/+source/linux-aws-5.4/5.4.0-1092.100~18.04.2
   https://launchpad.net/ubuntu/+source/linux-gcp-5.4/5.4.0-1096.105~18.04.2
   https://launchpad.net/ubuntu/+source/linux-hwe-5.4/5.4.0-135.152~18.04.2
   https://launchpad.net/ubuntu/+source/linux-ibm-5.4/5.4.0-1040.45~18.04.2
   https://launchpad.net/ubuntu/+source/linux-oracle-5.4/5.4.0-1090.99~18.04.2
   https://launchpad.net/ubuntu/+source/linux-raspi-5.4/5.4.0-1077.88~18.04.2