[USN-6127-1] Linux kernel vulnerabilities
==========================================================================
Ubuntu Security Notice USN-6127-1
May 31, 2023
linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15,
linux-gcp, linux-gcp-5.15, linux-gke, linux-gke-5.15, linux-gkeop,
linux-hwe-5.15, linux-hwe-5.19, linux-ibm, linux-kvm, linux-lowlatency,
linux-lowlatency-hwe-5.15, linux-oracle, linux-oracle-5.15, linux-raspi
vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 22.10
- Ubuntu 22.04 LTS
- 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-ibm: Linux kernel for IBM cloud systems
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi systems
- linux-gke: Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-hwe-5.19: Linux hardware enablement (HWE) kernel
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-5.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke-5.15: Linux kernel for Google Container Engine (GKE) systems
- linux-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-lowlatency-hwe-5.15: Linux low latency kernel
- linux-oracle-5.15: Linux kernel for Oracle Cloud systems
Details:
Patryk Sondej and Piotr Krysiuk discovered that a race condition existed in
the netfilter subsystem of the Linux kernel when processing batch requests,
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-2023-32233)
Gwangun Jung discovered that the Quick Fair Queueing scheduler
implementation in the Linux kernel contained an out-of-bounds write
vulnerability. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-31436)
Reima Ishii discovered that the nested KVM implementation for Intel x86
processors in the Linux kernel did not properly validate control registers
in certain situations. An attacker in a guest VM could use this to cause a
denial of service (guest crash). (CVE-2023-30456)
It was discovered that the Broadcom FullMAC USB WiFi driver in the Linux
kernel did not properly perform data buffer size validation in some
situations. A physically proximate attacker could use this to craft a
malicious USB device that when inserted, could cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-1380)
Jean-Baptiste Cayrou discovered that the shiftfs file system in the Ubuntu
Linux kernel contained a race condition when handling inode locking in some
situations. A local attacker could use this to cause a denial of service
(kernel deadlock). (CVE-2023-2612)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 22.10:
linux-image-5.19.0-1019-raspi 5.19.0-1019.26
linux-image-5.19.0-1019-raspi-nolpae 5.19.0-1019.26
linux-image-5.19.0-1023-ibm 5.19.0-1023.25
linux-image-5.19.0-1024-kvm 5.19.0-1024.25
linux-image-5.19.0-1024-oracle 5.19.0-1024.27
linux-image-5.19.0-1025-gcp 5.19.0-1025.27
linux-image-5.19.0-1025-lowlatency 5.19.0-1025.26
linux-image-5.19.0-1025-lowlatency-64k 5.19.0-1025.26
linux-image-5.19.0-1026-aws 5.19.0-1026.27
linux-image-5.19.0-1027-azure 5.19.0-1027.30
linux-image-5.19.0-43-generic 5.19.0-43.44
linux-image-5.19.0-43-generic-64k 5.19.0-43.44
linux-image-5.19.0-43-generic-lpae 5.19.0-43.44
linux-image-aws 5.19.0.1026.23
linux-image-azure 5.19.0.1027.22
linux-image-gcp 5.19.0.1025.21
linux-image-generic 5.19.0.43.39
linux-image-generic-64k 5.19.0.43.39
linux-image-generic-lpae 5.19.0.43.39
linux-image-ibm 5.19.0.1023.20
linux-image-kvm 5.19.0.1024.21
linux-image-lowlatency 5.19.0.1025.21
linux-image-lowlatency-64k 5.19.0.1025.21
linux-image-oracle 5.19.0.1024.20
linux-image-raspi 5.19.0.1019.18
linux-image-raspi-nolpae 5.19.0.1019.18
linux-image-virtual 5.19.0.43.39
Ubuntu 22.04 LTS:
linux-image-5.15.0-1021-gkeop 5.15.0-1021.26
linux-image-5.15.0-1031-ibm 5.15.0-1031.34
linux-image-5.15.0-1034-gke 5.15.0-1034.39
linux-image-5.15.0-1034-kvm 5.15.0-1034.39
linux-image-5.15.0-1035-gcp 5.15.0-1035.43
linux-image-5.15.0-1036-oracle 5.15.0-1036.42
linux-image-5.15.0-1037-aws 5.15.0-1037.41
linux-image-5.15.0-1039-azure 5.15.0-1039.46
linux-image-5.15.0-73-generic 5.15.0-73.80
linux-image-5.15.0-73-generic-64k 5.15.0-73.80
linux-image-5.15.0-73-generic-lpae 5.15.0-73.80
linux-image-5.15.0-73-lowlatency 5.15.0-73.80
linux-image-5.15.0-73-lowlatency-64k 5.15.0-73.80
linux-image-5.19.0-43-generic 5.19.0-43.44~22.04.1
linux-image-5.19.0-43-generic-64k 5.19.0-43.44~22.04.1
linux-image-5.19.0-43-generic-lpae 5.19.0-43.44~22.04.1
linux-image-aws-lts-22.04 5.15.0.1037.36
linux-image-azure 5.15.0.1039.35
linux-image-azure-lts-22.04 5.15.0.1039.35
linux-image-gcp-lts-22.04 5.15.0.1035.31
linux-image-generic 5.15.0.73.71
linux-image-generic-64k 5.15.0.73.71
linux-image-generic-64k-hwe-22.04 5.19.0.43.44~22.04.17
linux-image-generic-hwe-22.04 5.19.0.43.44~22.04.17
linux-image-generic-lpae 5.15.0.73.71
linux-image-generic-lpae-hwe-22.04 5.19.0.43.44~22.04.17
linux-image-gke 5.15.0.1034.33
linux-image-gke-5.15 5.15.0.1034.33
linux-image-gkeop 5.15.0.1021.20
linux-image-gkeop-5.15 5.15.0.1021.20
linux-image-ibm 5.15.0.1031.27
linux-image-kvm 5.15.0.1034.30
linux-image-lowlatency 5.15.0.73.78
linux-image-lowlatency-64k 5.15.0.73.78
linux-image-oracle 5.15.0.1036.31
linux-image-virtual 5.15.0.73.71
linux-image-virtual-hwe-22.04 5.19.0.43.44~22.04.17
Ubuntu 20.04 LTS:
linux-image-5.15.0-1034-gke 5.15.0-1034.39~20.04.1
linux-image-5.15.0-1035-gcp 5.15.0-1035.43~20.04.1
linux-image-5.15.0-1036-oracle 5.15.0-1036.42~20.04.1
linux-image-5.15.0-1037-aws 5.15.0-1037.41~20.04.1
linux-image-5.15.0-1039-azure 5.15.0-1039.46~20.04.1
linux-image-5.15.0-73-generic 5.15.0-73.80~20.04.1
linux-image-5.15.0-73-generic-64k 5.15.0-73.80~20.04.1
linux-image-5.15.0-73-generic-lpae 5.15.0-73.80~20.04.1
linux-image-5.15.0-73-lowlatency 5.15.0-73.80~20.04.1
linux-image-5.15.0-73-lowlatency-64k 5.15.0-73.80~20.04.1
linux-image-aws 5.15.0.1037.41~20.04.26
linux-image-azure 5.15.0.1039.46~20.04.29
linux-image-azure-cvm 5.15.0.1039.46~20.04.29
linux-image-gcp 5.15.0.1035.43~20.04.1
linux-image-generic-64k-hwe-20.04 5.15.0.73.80~20.04.34
linux-image-generic-hwe-20.04 5.15.0.73.80~20.04.34
linux-image-generic-lpae-hwe-20.04 5.15.0.73.80~20.04.34
linux-image-gke-5.15 5.15.0.1034.39~20.04.1
linux-image-lowlatency-64k-hwe-20.04 5.15.0.73.80~20.04.31
linux-image-lowlatency-hwe-20.04 5.15.0.73.80~20.04.31
linux-image-oem-20.04 5.15.0.73.80~20.04.34
linux-image-oem-20.04b 5.15.0.73.80~20.04.34
linux-image-oem-20.04c 5.15.0.73.80~20.04.34
linux-image-oem-20.04d 5.15.0.73.80~20.04.34
linux-image-oracle 5.15.0.1036.42~20.04.1
linux-image-virtual-hwe-20.04 5.15.0.73.80~20.04.34
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-6127-1
CVE-2023-1380, CVE-2023-2612, CVE-2023-30456, CVE-2023-31436,
CVE-2023-32233
Package Information:
https://launchpad.net/ubuntu/+source/linux/5.19.0-43.44
https://launchpad.net/ubuntu/+source/linux-aws/5.19.0-1026.27
https://launchpad.net/ubuntu/+source/linux-azure/5.19.0-1027.30
https://launchpad.net/ubuntu/+source/linux-gcp/5.19.0-1025.27
https://launchpad.net/ubuntu/+source/linux-ibm/5.19.0-1023.25
https://launchpad.net/ubuntu/+source/linux-kvm/5.19.0-1024.25
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.19.0-1025.26
https://launchpad.net/ubuntu/+source/linux-oracle/5.19.0-1024.27
https://launchpad.net/ubuntu/+source/linux-raspi/5.19.0-1019.26
https://launchpad.net/ubuntu/+source/linux/5.15.0-73.80
https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1037.41
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1039.46
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1035.43
https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1034.39
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1021.26
https://launchpad.net/ubuntu/+source/linux-hwe-5.19/5.19.0-43.44~22.04.1
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1031.34
https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1034.39
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-73.80
https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1036.42
https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1037.41~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1039.46~20.04.1
https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1035.43~20.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1034.39~20.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-73.80~20.04.1
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-73.80~20.04.1
https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1036.42~20.04.1
A Linux kernel security update has been released for Ubuntu Linux 20.04 LTS, 22.04 LTS, and 22.10.
