Ubuntu Security Notice 6462-1 - Seth Jenkins discovered that the Linux kernel did not properly perform address randomization for a per-cpu memory management structure. A local attacker could use this to expose sensitive information or in conjunction with another kernel vulnerability. Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in the Linux kernel contained a race condition, leading to a null pointer dereference vulnerability. A local attacker could use this to cause a denial of service.
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Ubuntu Security Notice USN-6462-1
October 31, 2023
linux, linux-aws, linux-aws-5.4, linux-azure, linux-azure-5.4,
linux-bluefield, 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, linux-xilinx-zynqmp vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
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-bluefield: Linux kernel for NVIDIA BlueField platforms
- 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-xilinx-zynqmp: Linux kernel for Xilinx ZynqMP processors
- linux-aws-5.4: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.4: Linux kernel for Microsoft Azure cloud 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:
Seth Jenkins discovered that the Linux kernel did not properly perform
address randomization for a per-cpu memory management structure. A local
attacker could use this to expose sensitive information (kernel memory) or
in conjunction with another kernel vulnerability. (CVE-2023-0597)
Yu Hao and Weiteng Chen discovered that the Bluetooth HCI UART driver in
the Linux kernel contained a race condition, leading to a null pointer
dereference vulnerability. A local attacker could use this to cause a
denial of service (system crash). (CVE-2023-31083)
Lin Ma discovered that the Netlink Transformation (XFRM) subsystem in the
Linux kernel contained a null pointer dereference vulnerability in some
situations. A local privileged attacker could use this to cause a denial of
service (system crash). (CVE-2023-3772)
It was discovered that the Siano USB MDTV receiver device driver in the
Linux kernel did not properly handle device initialization failures in
certain situations, leading to a use-after-free vulnerability. A physically
proximate attacker could use this cause a denial of service (system crash).
(CVE-2023-4132)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 20.04 LTS:
linux-image-5.4.0-1033-xilinx-zynqmp 5.4.0-1033.37
linux-image-5.4.0-1060-ibm 5.4.0-1060.65
linux-image-5.4.0-1074-bluefield 5.4.0-1074.80
linux-image-5.4.0-1080-gkeop 5.4.0-1080.84
linux-image-5.4.0-1097-raspi 5.4.0-1097.109
linux-image-5.4.0-1102-kvm 5.4.0-1102.108
linux-image-5.4.0-1112-oracle 5.4.0-1112.121
linux-image-5.4.0-1113-aws 5.4.0-1113.123
linux-image-5.4.0-1117-gcp 5.4.0-1117.126
linux-image-5.4.0-1119-azure 5.4.0-1119.126
linux-image-5.4.0-166-generic 5.4.0-166.183
linux-image-5.4.0-166-generic-lpae 5.4.0-166.183
linux-image-5.4.0-166-lowlatency 5.4.0-166.183
linux-image-aws-lts-20.04 5.4.0.1113.110
linux-image-azure-lts-20.04 5.4.0.1119.112
linux-image-bluefield 5.4.0.1074.69
linux-image-gcp-lts-20.04 5.4.0.1117.119
linux-image-generic 5.4.0.166.163
linux-image-generic-lpae 5.4.0.166.163
linux-image-gkeop 5.4.0.1080.78
linux-image-gkeop-5.4 5.4.0.1080.78
linux-image-ibm-lts-20.04 5.4.0.1060.89
linux-image-kvm 5.4.0.1102.97
linux-image-lowlatency 5.4.0.166.163
linux-image-oem 5.4.0.166.163
linux-image-oem-osp1 5.4.0.166.163
linux-image-oracle-lts-20.04 5.4.0.1112.105
linux-image-raspi 5.4.0.1097.127
linux-image-raspi2 5.4.0.1097.127
linux-image-virtual 5.4.0.166.163
linux-image-xilinx-zynqmp 5.4.0.1033.33
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
linux-image-5.4.0-1060-ibm 5.4.0-1060.65~18.04.1
linux-image-5.4.0-1097-raspi 5.4.0-1097.109~18.04.2
linux-image-5.4.0-1112-oracle 5.4.0-1112.121~18.04.4
linux-image-5.4.0-1113-aws 5.4.0-1113.123~18.04.1
linux-image-5.4.0-1117-gcp 5.4.0-1117.126~18.04.1
linux-image-5.4.0-1119-azure 5.4.0-1119.126~18.04.2
linux-image-5.4.0-166-generic 5.4.0-166.183~18.04.2
linux-image-5.4.0-166-lowlatency 5.4.0-166.183~18.04.2
linux-image-aws 5.4.0.1113.91
linux-image-azure 5.4.0.1119.92
linux-image-gcp 5.4.0.1117.93
linux-image-generic-hwe-18.04 5.4.0.166.183~18.04.134
linux-image-ibm 5.4.0.1060.71
linux-image-lowlatency-hwe-18.04 5.4.0.166.183~18.04.134
linux-image-oem 5.4.0.166.183~18.04.134
linux-image-oem-osp1 5.4.0.166.183~18.04.134
linux-image-oracle 5.4.0.1112.121~18.04.84
linux-image-raspi-hwe-18.04 5.4.0.1097.94
linux-image-snapdragon-hwe-18.04 5.4.0.166.183~18.04.134
linux-image-virtual-hwe-18.04 5.4.0.166.183~18.04.134
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-6462-1
CVE-2023-0597, CVE-2023-31083, CVE-2023-3772, CVE-2023-4132
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.4.0-166.183
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1113.123
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1119.126
https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1074.80
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1117.126
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1080.84
https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1060.65
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1102.108
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1112.121
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1097.109
https://launchpad.net/ubuntu/+source/linux-xilinx-zynqmp/5.4.0-1033.37