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Ubuntu Security Notice USN-5980-1

Ubuntu Security Notice USN-5980-1
Posted Mar 29, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5980-1 - It was discovered that the System V IPC implementation in the Linux kernel did not properly handle large shared memory counts. A local attacker could use this to cause a denial of service. It was discovered that the KVM VMX implementation in the Linux kernel did not properly handle indirect branch prediction isolation between L1 and L2 VMs. An attacker in a guest VM could use this to expose sensitive information from the host OS or other guest VMs.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2021-3669, CVE-2022-2196, CVE-2022-4382, CVE-2023-23559
SHA-256 | 0911b428db1dd4aad57b8d31e543dda518255eb97c1138433301e3ba46c82485

Ubuntu Security Notice USN-5980-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5980-1
March 28, 2023

linux, linux-aws, linux-azure, linux-gcp, linux-gke, linux-gkeop,
linux-ibm, linux-kvm, linux-oracle, linux-raspi vulnerabilities
==========================================================================

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

- Ubuntu 20.04 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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke: Linux kernel for Google Container Engine (GKE) 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

Details:

It was discovered that the System V IPC implementation in the Linux kernel
did not properly handle large shared memory counts. A local attacker could
use this to cause a denial of service (memory exhaustion). (CVE-2021-3669)

It was discovered that the KVM VMX implementation in the Linux kernel did
not properly handle indirect branch prediction isolation between L1 and L2
VMs. An attacker in a guest VM could use this to expose sensitive
information from the host OS or other guest VMs. (CVE-2022-2196)

Gerald Lee discovered that the USB Gadget file system implementation in the
Linux kernel contained a race condition, leading to a use-after-free
vulnerability in some situations. A local attacker could use this to cause
a denial of service (system crash) or possibly execute arbitrary code.
(CVE-2022-4382)

It was discovered that the RNDIS USB driver in the Linux kernel contained
an integer overflow vulnerability. A local attacker with physical access
could plug in a malicious USB device to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2023-23559)

Update instructions:

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

Ubuntu 20.04 LTS:
linux-image-5.4.0-1046-ibm 5.4.0-1046.51
linux-image-5.4.0-1066-gkeop 5.4.0-1066.70
linux-image-5.4.0-1082-raspi 5.4.0-1082.93
linux-image-5.4.0-1088-kvm 5.4.0-1088.94
linux-image-5.4.0-1096-gke 5.4.0-1096.103
linux-image-5.4.0-1098-oracle 5.4.0-1098.107
linux-image-5.4.0-1099-aws 5.4.0-1099.107
linux-image-5.4.0-1102-gcp 5.4.0-1102.111
linux-image-5.4.0-1105-azure 5.4.0-1105.111
linux-image-5.4.0-146-generic 5.4.0-146.163
linux-image-5.4.0-146-generic-lpae 5.4.0-146.163
linux-image-5.4.0-146-lowlatency 5.4.0-146.163
linux-image-aws-lts-20.04 5.4.0.1099.96
linux-image-azure-lts-20.04 5.4.0.1105.98
linux-image-gcp-lts-20.04 5.4.0.1102.104
linux-image-generic 5.4.0.146.144
linux-image-generic-lpae 5.4.0.146.144
linux-image-gke 5.4.0.1096.101
linux-image-gke-5.4 5.4.0.1096.101
linux-image-gkeop 5.4.0.1066.64
linux-image-gkeop-5.4 5.4.0.1066.64
linux-image-ibm 5.4.0.1046.72
linux-image-ibm-lts-20.04 5.4.0.1046.72
linux-image-kvm 5.4.0.1088.82
linux-image-lowlatency 5.4.0.146.144
linux-image-oem 5.4.0.146.144
linux-image-oem-osp1 5.4.0.146.144
linux-image-oracle-lts-20.04 5.4.0.1098.91
linux-image-raspi 5.4.0.1082.112
linux-image-raspi2 5.4.0.1082.112
linux-image-virtual 5.4.0.146.144

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-5980-1
CVE-2021-3669, CVE-2022-2196, CVE-2022-4382, CVE-2023-23559

Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-146.163
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1099.107
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1105.111
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1102.111
https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1096.103
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1066.70
https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1046.51
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1088.94
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1098.107
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1082.93
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