Ubuntu Security Notice 6193-1 - Hangyu Hua discovered that the Flower classifier implementation in the Linux kernel contained an out-of-bounds write vulnerability. An attacker could use this to cause a denial of service or possibly execute arbitrary code. It was discovered that for some Intel processors the INVLPG instruction implementation did not properly flush global TLB entries when PCIDs are enabled. An attacker could use this to expose sensitive information or possibly cause undesired behaviors.
4b76c4de98e7b426449b5a65a6482a91abc939845c13fcd49eb6cd4503d006c9==========================================================================
Ubuntu Security Notice USN-6193-1
June 29, 2023
linux, linux-aws, linux-aws-5.15, linux-aws-5.4, linux-azure,
linux-azure-5.15, linux-azure-5.4, linux-azure-fde-5.15, linux-bluefield,
linux-gcp, linux-gcp-5.15, linux-gcp-5.4, linux-gke, linux-gke-5.15,
linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15, linux-hwe-5.4, linux-ibm,
linux-ibm-5.4, linux-kvm, linux-lowlatency, linux-lowlatency-hwe-5.15,
linux-nvidia, linux-oracle, linux-oracle-5.15, linux-oracle-5.4,
linux-raspi, linux-raspi-5.4 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.04
- Ubuntu 22.04 LTS
- 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-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-raspi: Linux kernel for Raspberry Pi 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-nvidia: Linux kernel for NVIDIA systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-aws-5.15: Linux kernel for Amazon Web Services (AWS) systems
- linux-azure-5.15: Linux kernel for Microsoft Azure cloud systems
- linux-azure-fde-5.15: Linux kernel for Microsoft Azure CVM cloud systems
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- 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-gkeop-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
- 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:
Hangyu Hua discovered that the Flower classifier implementation in the
Linux kernel contained an out-of-bounds write vulnerability. An attacker
could use this to cause a denial of service (system crash) or possibly
execute arbitrary code. (CVE-2023-35788, LP: #2023577)
It was discovered that for some Intel processors the INVLPG instruction
implementation did not properly flush global TLB entries when PCIDs are
enabled. An attacker could use this to expose sensitive information
(kernel memory) or possibly cause undesired behaviors. (LP: #2023220)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.04:
linux-image-6.2.0-1006-aws 6.2.0-1006.6
linux-image-6.2.0-1007-kvm 6.2.0-1007.7
linux-image-6.2.0-1007-lowlatency 6.2.0-1007.7
linux-image-6.2.0-1007-lowlatency-64k 6.2.0-1007.7
linux-image-6.2.0-1007-raspi 6.2.0-1007.9
linux-image-6.2.0-1007-raspi-nolpae 6.2.0-1007.9
linux-image-6.2.0-24-generic 6.2.0-24.24
linux-image-6.2.0-24-generic-64k 6.2.0-24.24
linux-image-6.2.0-24-generic-lpae 6.2.0-24.24
linux-image-aws 6.2.0.1006.7
linux-image-generic 6.2.0.24.24
linux-image-generic-64k 6.2.0.24.24
linux-image-generic-lpae 6.2.0.24.24
linux-image-kvm 6.2.0.1007.7
linux-image-lowlatency 6.2.0.1007.7
linux-image-lowlatency-64k 6.2.0.1007.7
linux-image-raspi 6.2.0.1007.10
linux-image-raspi-nolpae 6.2.0.1007.10
linux-image-virtual 6.2.0.24.24
Ubuntu 22.04 LTS:
linux-image-5.15.0-1023-gkeop 5.15.0-1023.28
linux-image-5.15.0-1028-nvidia 5.15.0-1028.28
linux-image-5.15.0-1028-nvidia-lowlatency 5.15.0-1028.28
linux-image-5.15.0-1033-ibm 5.15.0-1033.36
linux-image-5.15.0-1033-raspi 5.15.0-1033.36
linux-image-5.15.0-1033-raspi-nolpae 5.15.0-1033.36
linux-image-5.15.0-1037-gcp 5.15.0-1037.45
linux-image-5.15.0-1037-gke 5.15.0-1037.42
linux-image-5.15.0-1037-kvm 5.15.0-1037.42
linux-image-5.15.0-1038-oracle 5.15.0-1038.44
linux-image-5.15.0-1039-aws 5.15.0-1039.44
linux-image-5.15.0-1041-azure 5.15.0-1041.48
linux-image-5.15.0-76-generic 5.15.0-76.83
linux-image-5.15.0-76-generic-64k 5.15.0-76.83
linux-image-5.15.0-76-generic-lpae 5.15.0-76.83
linux-image-5.15.0-76-lowlatency 5.15.0-76.83
linux-image-5.15.0-76-lowlatency-64k 5.15.0-76.83
linux-image-aws-lts-22.04 5.15.0.1039.38
linux-image-azure 5.15.0.1041.37
linux-image-azure-lts-22.04 5.15.0.1041.37
linux-image-gcp-lts-22.04 5.15.0.1037.33
linux-image-generic 5.15.0.76.74
linux-image-generic-64k 5.15.0.76.74
linux-image-generic-lpae 5.15.0.76.74
linux-image-gke 5.15.0.1037.36
linux-image-gke-5.15 5.15.0.1037.36
linux-image-gkeop 5.15.0.1023.22
linux-image-gkeop-5.15 5.15.0.1023.22
linux-image-ibm 5.15.0.1033.29
linux-image-kvm 5.15.0.1037.33
linux-image-lowlatency 5.15.0.76.81
linux-image-lowlatency-64k 5.15.0.76.81
linux-image-nvidia 5.15.0.1028.28
linux-image-nvidia-lowlatency 5.15.0.1028.28
linux-image-oracle 5.15.0.1038.33
linux-image-raspi 5.15.0.1033.30
linux-image-raspi-nolpae 5.15.0.1033.30
linux-image-virtual 5.15.0.76.74
Ubuntu 20.04 LTS:
linux-image-5.15.0-1023-gkeop 5.15.0-1023.28~20.04.1
linux-image-5.15.0-1037-gcp 5.15.0-1037.45~20.04.1
linux-image-5.15.0-1037-gke 5.15.0-1037.42~20.04.1
linux-image-5.15.0-1038-oracle 5.15.0-1038.44~20.04.1
linux-image-5.15.0-1039-aws 5.15.0-1039.44~20.04.1
linux-image-5.15.0-1041-azure 5.15.0-1041.48~20.04.1
linux-image-5.15.0-1041-azure-fde 5.15.0-1041.48~20.04.1.1
linux-image-5.15.0-76-generic 5.15.0-76.83~20.04.1
linux-image-5.15.0-76-generic-64k 5.15.0-76.83~20.04.1
linux-image-5.15.0-76-generic-lpae 5.15.0-76.83~20.04.1
linux-image-5.15.0-76-lowlatency 5.15.0-76.83~20.04.1
linux-image-5.15.0-76-lowlatency-64k 5.15.0-76.83~20.04.1
linux-image-5.4.0-1052-ibm 5.4.0-1052.57
linux-image-5.4.0-1066-bluefield 5.4.0-1066.72
linux-image-5.4.0-1072-gkeop 5.4.0-1072.76
linux-image-5.4.0-1089-raspi 5.4.0-1089.100
linux-image-5.4.0-1094-kvm 5.4.0-1094.100
linux-image-5.4.0-1104-oracle 5.4.0-1104.113
linux-image-5.4.0-1105-aws 5.4.0-1105.113
linux-image-5.4.0-1108-gcp 5.4.0-1108.117
linux-image-5.4.0-1111-azure 5.4.0-1111.117
linux-image-5.4.0-153-generic 5.4.0-153.170
linux-image-5.4.0-153-generic-lpae 5.4.0-153.170
linux-image-5.4.0-153-lowlatency 5.4.0-153.170
linux-image-aws 5.15.0.1039.44~20.04.28
linux-image-aws-lts-20.04 5.4.0.1105.102
linux-image-azure 5.15.0.1041.48~20.04.31
linux-image-azure-cvm 5.15.0.1041.48~20.04.31
linux-image-azure-fde 5.15.0.1041.48~20.04.1.20
linux-image-azure-lts-20.04 5.4.0.1111.104
linux-image-bluefield 5.4.0.1066.61
linux-image-gcp 5.15.0.1037.45~20.04.1
linux-image-gcp-lts-20.04 5.4.0.1108.110
linux-image-generic 5.4.0.153.150
linux-image-generic-64k-hwe-20.04 5.15.0.76.83~20.04.37
linux-image-generic-hwe-20.04 5.15.0.76.83~20.04.37
linux-image-generic-lpae 5.4.0.153.150
linux-image-generic-lpae-hwe-20.04 5.15.0.76.83~20.04.37
linux-image-gke-5.15 5.15.0.1037.42~20.04.1
linux-image-gkeop 5.4.0.1072.70
linux-image-gkeop-5.15 5.15.0.1023.28~20.04.19
linux-image-gkeop-5.4 5.4.0.1072.70
linux-image-ibm 5.4.0.1052.78
linux-image-ibm-lts-20.04 5.4.0.1052.78
linux-image-kvm 5.4.0.1094.89
linux-image-lowlatency 5.4.0.153.150
linux-image-lowlatency-64k-hwe-20.04 5.15.0.76.83~20.04.34
linux-image-lowlatency-hwe-20.04 5.15.0.76.83~20.04.34
linux-image-oem 5.4.0.153.150
linux-image-oem-20.04 5.15.0.76.83~20.04.37
linux-image-oem-20.04b 5.15.0.76.83~20.04.37
linux-image-oem-20.04c 5.15.0.76.83~20.04.37
linux-image-oem-20.04d 5.15.0.76.83~20.04.37
linux-image-oem-osp1 5.4.0.153.150
linux-image-oracle 5.15.0.1038.44~20.04.1
linux-image-oracle-lts-20.04 5.4.0.1104.97
linux-image-raspi 5.4.0.1089.119
linux-image-raspi-hwe-18.04 5.4.0.1089.119
linux-image-raspi2 5.4.0.1089.119
linux-image-raspi2-hwe-18.04 5.4.0.1089.119
linux-image-virtual 5.4.0.153.150
linux-image-virtual-hwe-20.04 5.15.0.76.83~20.04.37
Ubuntu 18.04 LTS (Available with Ubuntu Pro):
linux-image-5.4.0-1052-ibm 5.4.0-1052.57~18.04.1
linux-image-5.4.0-1089-raspi 5.4.0-1089.100~18.04.1
linux-image-5.4.0-1104-oracle 5.4.0-1104.113~18.04.1
linux-image-5.4.0-1105-aws 5.4.0-1105.113~18.04.1
linux-image-5.4.0-1108-gcp 5.4.0-1108.117~18.04.1
linux-image-5.4.0-1111-azure 5.4.0-1111.117~18.04.1
linux-image-5.4.0-153-generic 5.4.0-153.170~18.04.1
linux-image-5.4.0-153-generic-lpae 5.4.0-153.170~18.04.1
linux-image-5.4.0-153-lowlatency 5.4.0-153.170~18.04.1
linux-image-aws 5.4.0.1105.83
linux-image-azure 5.4.0.1111.84
linux-image-gcp 5.4.0.1108.84
linux-image-generic-hwe-18.04 5.4.0.153.170~18.04.124
linux-image-generic-lpae-hwe-18.04 5.4.0.153.170~18.04.124
linux-image-ibm 5.4.0.1052.63
linux-image-lowlatency-hwe-18.04 5.4.0.153.170~18.04.124
linux-image-oem 5.4.0.153.170~18.04.124
linux-image-oem-osp1 5.4.0.153.170~18.04.124
linux-image-oracle 5.4.0.1104.113~18.04.76
linux-image-raspi-hwe-18.04 5.4.0.1089.86
linux-image-snapdragon-hwe-18.04 5.4.0.153.170~18.04.124
linux-image-virtual-hwe-18.04 5.4.0.153.170~18.04.124
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-6193-1
https://launchpad.net/bugs/2023220
https://launchpad.net/bugs/2023577
CVE-2023-35788
Package Information:
https://launchpad.net/ubuntu/+source/linux/6.2.0-24.24
https://launchpad.net/ubuntu/+source/linux-aws/6.2.0-1006.6
https://launchpad.net/ubuntu/+source/linux-kvm/6.2.0-1007.7
https://launchpad.net/ubuntu/+source/linux-lowlatency/6.2.0-1007.7
https://launchpad.net/ubuntu/+source/linux-raspi/6.2.0-1007.9
https://launchpad.net/ubuntu/+source/linux/5.15.0-76.83
https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1039.44
https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1041.48
https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1037.45
https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1037.42
https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1023.28
https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1033.36
https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1037.42
https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-76.83
https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1028.28
https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1038.44
https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1033.36
https://launchpad.net/ubuntu/+source/linux/5.4.0-153.170
https://launchpad.net/ubuntu/+source/linux-aws/5.4.0-1105.113
https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1039.44~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure/5.4.0-1111.117
https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1041.48~20.04.1
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1041.48~20.04.1.1
https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1066.72
https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1108.117
https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1037.45~20.04.1
https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1037.42~20.04.1
https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1072.76
https://launchpad.net/ubuntu/+source/linux-gkeop-5.15/5.15.0-1023.28~20.04.1
https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-76.83~20.04.1
https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1052.57
https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1094.100
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-76.83~20.04.1
https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1104.113
https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1038.44~20.04.1
https://launchpad.net/ubuntu/+source/linux-raspi/5.4.0-1089.100
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