=========================================================================Ubuntu Security Notice USN-6185-1
June 22, 2023
linux-aws, linux-azure, linux-bluefield, 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-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- 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 TUN/TAP driver in the Linux kernel did not
properly initialize socket data. A local attacker could use this to cause a
denial of service (system crash). (CVE-2023-1076)
It was discovered that the Real-Time Scheduling Class implementation in the
Linux kernel contained a type confusion vulnerability in some situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2023-1077)
It was discovered that the ASUS HID driver in the Linux kernel did not
properly handle device removal, leading to a use-after-free vulnerability.
A local attacker with physical access could plug in a specially crafted USB
device to cause a denial of service (system crash). (CVE-2023-1079)
It was discovered that the Xircom PCMCIA network device driver in the Linux
kernel did not properly handle device removal events. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2023-1670)
It was discovered that a race condition existed in the Xen transport layer
implementation for the 9P file system protocol in the Linux kernel, leading
to a use-after-free vulnerability. A local attacker could use this to cause
a denial of service (guest crash) or expose sensitive information (guest
kernel memory). (CVE-2023-1859)
Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2
mitigations with prctl syscall were insufficient in some situations. A
local attacker could possibly use this to expose sensitive information.
(CVE-2023-1998)
It was discovered that the BigBen Interactive Kids' gamepad driver in the
Linux kernel did not properly handle device removal, leading to a use-after-free vulnerability. A local attacker with physical access could plug
in a specially crafted USB device to cause a denial of service (system
crash). (CVE-2023-25012)
It was discovered that a use-after-free vulnerability existed in the HFS+
file system implementation in the Linux kernel. A local attacker could
possibly use this to cause a denial of service (system crash).
(CVE-2023-2985)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1051-ibm 5.4.0-1051.56
linux-image-5.4.0-1065-bluefield 5.4.0-1065.71
linux-image-5.4.0-1071-gkeop 5.4.0-1071.75
linux-image-5.4.0-1088-raspi 5.4.0-1088.99
linux-image-5.4.0-1093-kvm 5.4.0-1093.99
linux-image-5.4.0-1102-gke 5.4.0-1102.109
linux-image-5.4.0-1103-oracle 5.4.0-1103.112
linux-image-5.4.0-1104-aws 5.4.0-1104.112
linux-image-5.4.0-1107-gcp 5.4.0-1107.116
linux-image-5.4.0-1110-azure 5.4.0-1110.116
linux-image-aws-lts-20.04 5.4.0.1104.101
linux-image-azure-lts-20.04 5.4.0.1110.103
linux-image-bluefield 5.4.0.1065.60
linux-image-gcp-lts-20.04 5.4.0.1107.109
linux-image-gke 5.4.0.1102.107
linux-image-gke-5.4 5.4.0.1102.107
linux-image-gkeop 5.4.0.1071.69
linux-image-gkeop-5.4 5.4.0.1071.69
linux-image-ibm 5.4.0.1051.77
linux-image-ibm-lts-20.04 5.4.0.1051.77
linux-image-kvm 5.4.0.1093.88
linux-image-oracle-lts-20.04 5.4.0.1103.96
linux-image-raspi 5.4.0.1088.118
linux-image-raspi2 5.4.0.1088.118
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-6185-1
CVE-2023-1076, CVE-2023-1077, CVE-2023-1079, CVE-2023-1670,
CVE-2023-1859, CVE-2023-1998, CVE-2023-25012, CVE-2023-2985
Package Information:
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1104.112
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1110.116
https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1065.71
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1107.116
https://launchpad.net/ubuntu/+source/linux-gke/5.4.0-1102.109
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1071.75
https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1051.56
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1093.99
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1103.112
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1088.99
