==========================================================================
Ubuntu Security Notice USN-6246-1
July 25, 2023

linux, linux-aws, linux-aws-5.15, linux-azure, linux-azure-5.15,
linux-azure-fde, linux-azure-fde-5.15, linux-gcp, linux-gcp-5.15,
linux-gke, linux-gke-5.15, linux-gkeop, linux-gkeop-5.15, linux-hwe-5.15,
linux-ibm, linux-intel-iotg, linux-kvm, linux-lowlatency,
linux-lowlatency-hwe-5.15, linux-nvidia, linux-oracle, linux-oracle-5.15,
linux-raspi vulnerabilities
==========================================================================

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

- 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-azure-fde: Linux kernel for Microsoft Azure CVM 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-intel-iotg: Linux kernel for Intel IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-lowlatency: Linux low latency kernel
- linux-nvidia: Linux kernel for NVIDIA systems
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-raspi: Linux kernel for Raspberry Pi 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-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

Details:

It was discovered that the IP-VLAN network driver for the Linux kernel did
not properly initialize memory in some situations, leading to 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-2023-3090)

Mingi Cho discovered that the netfilter subsystem in the Linux kernel did
not properly validate the status of a nft chain while performing a lookup
by id, leading to a use-after-free vulnerability. An attacker could use
this to cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2023-31248)

Querijn Voet discovered that a race condition existed in the io_uring
subsystem in the Linux kernel, 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-2023-3389)

It was discovered that the netfilter subsystem in the Linux kernel did not
properly handle some error conditions, 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-2023-3390)

Lin Ma discovered that a race condition existed in the MCTP implementation
in the Linux kernel, leading to a use-after-free vulnerability. A
privileged attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2023-3439)

Tanguy Dubroca discovered that the netfilter subsystem in the Linux kernel
did not properly handle certain pointer data type, leading to an out-of-
bounds write vulnerability. A privileged attacker could use this to cause a
denial of service (system crash) or possibly execute arbitrary code.
(CVE-2023-35001)

Update instructions:

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1024-gkeop   5.15.0-1024.29
   linux-image-5.15.0-1029-nvidia  5.15.0-1029.29
   linux-image-5.15.0-1029-nvidia-lowlatency  5.15.0-1029.29
   linux-image-5.15.0-1034-ibm     5.15.0-1034.37
   linux-image-5.15.0-1034-raspi   5.15.0-1034.37
   linux-image-5.15.0-1034-raspi-nolpae  5.15.0-1034.37
   linux-image-5.15.0-1036-intel-iotg  5.15.0-1036.41
   linux-image-5.15.0-1038-gcp     5.15.0-1038.46
   linux-image-5.15.0-1038-gke     5.15.0-1038.43
   linux-image-5.15.0-1038-kvm     5.15.0-1038.43
   linux-image-5.15.0-1039-oracle  5.15.0-1039.45
   linux-image-5.15.0-1040-aws     5.15.0-1040.45
   linux-image-5.15.0-1042-azure   5.15.0-1042.49
   linux-image-5.15.0-1042-azure-fde  5.15.0-1042.49.1
   linux-image-5.15.0-78-generic   5.15.0-78.85
   linux-image-5.15.0-78-generic-64k  5.15.0-78.85
   linux-image-5.15.0-78-generic-lpae  5.15.0-78.85
   linux-image-5.15.0-78-lowlatency  5.15.0-78.85
   linux-image-5.15.0-78-lowlatency-64k  5.15.0-78.85
   linux-image-aws-lts-22.04       5.15.0.1040.39
   linux-image-azure               5.15.0.1042.38
   linux-image-azure-fde           5.15.0.1042.49.20
   linux-image-azure-fde-lts-22.04  5.15.0.1042.49.20
   linux-image-azure-lts-22.04     5.15.0.1042.38
   linux-image-gcp-lts-22.04       5.15.0.1038.34
   linux-image-generic             5.15.0.78.75
   linux-image-generic-64k         5.15.0.78.75
   linux-image-generic-lpae        5.15.0.78.75
   linux-image-gke                 5.15.0.1038.37
   linux-image-gke-5.15            5.15.0.1038.37
   linux-image-gkeop               5.15.0.1024.23
   linux-image-gkeop-5.15          5.15.0.1024.23
   linux-image-ibm                 5.15.0.1034.30
   linux-image-intel-iotg          5.15.0.1036.35
   linux-image-kvm                 5.15.0.1038.34
   linux-image-lowlatency          5.15.0.78.82
   linux-image-lowlatency-64k      5.15.0.78.82
   linux-image-nvidia              5.15.0.1029.29
   linux-image-nvidia-lowlatency   5.15.0.1029.29
   linux-image-oracle              5.15.0.1039.34
   linux-image-raspi               5.15.0.1034.32
   linux-image-raspi-nolpae        5.15.0.1034.32
   linux-image-virtual             5.15.0.78.75

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1024-gkeop   5.15.0-1024.29~20.04.1
   linux-image-5.15.0-1038-gcp     5.15.0-1038.46~20.04.1
   linux-image-5.15.0-1038-gke     5.15.0-1038.43~20.04.1
   linux-image-5.15.0-1039-oracle  5.15.0-1039.45~20.04.1
   linux-image-5.15.0-1040-aws     5.15.0-1040.45~20.04.1
   linux-image-5.15.0-1042-azure   5.15.0-1042.49~20.04.1
   linux-image-5.15.0-1042-azure-fde  5.15.0-1042.49~20.04.1.1
   linux-image-5.15.0-78-generic   5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-generic-64k  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-generic-lpae  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-lowlatency  5.15.0-78.85~20.04.1
   linux-image-5.15.0-78-lowlatency-64k  5.15.0-78.85~20.04.1
   linux-image-aws                 5.15.0.1040.45~20.04.29
   linux-image-azure               5.15.0.1042.49~20.04.32
   linux-image-azure-cvm           5.15.0.1042.49~20.04.32
   linux-image-azure-fde           5.15.0.1042.49~20.04.1.21
   linux-image-gcp                 5.15.0.1038.46~20.04.1
   linux-image-generic-64k-hwe-20.04  5.15.0.78.85~20.04.38
   linux-image-generic-hwe-20.04   5.15.0.78.85~20.04.38
   linux-image-generic-lpae-hwe-20.04  5.15.0.78.85~20.04.38
   linux-image-gke-5.15            5.15.0.1038.43~20.04.1
   linux-image-gkeop-5.15          5.15.0.1024.29~20.04.20
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.78.85~20.04.35
   linux-image-lowlatency-hwe-20.04  5.15.0.78.85~20.04.35
   linux-image-oem-20.04           5.15.0.78.85~20.04.38
   linux-image-oem-20.04b          5.15.0.78.85~20.04.38
   linux-image-oem-20.04c          5.15.0.78.85~20.04.38
   linux-image-oem-20.04d          5.15.0.78.85~20.04.38
   linux-image-oracle              5.15.0.1039.45~20.04.1
   linux-image-virtual-hwe-20.04   5.15.0.78.85~20.04.38

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-6246-1
   CVE-2023-3090, CVE-2023-31248, CVE-2023-3389, CVE-2023-3390,
   CVE-2023-3439, CVE-2023-35001

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-78.85
   https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1040.45
   https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1042.49
   https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1042.49.1
   https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1038.46
   https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1038.43
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1024.29
   https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1034.37
   https://launchpad.net/ubuntu/+source/linux-intel-iotg/5.15.0-1036.41
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1038.43
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-78.85
   https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1029.29
   https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1039.45
   https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1034.37
   https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1040.45~20.04.1
   https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1042.49~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1042.49~20.04.1.1
   https://launchpad.net/ubuntu/+source/linux-gcp-5.15/5.15.0-1038.46~20.04.1
   https://launchpad.net/ubuntu/+source/linux-gke-5.15/5.15.0-1038.43~20.04.1
   https://launchpad.net/ubuntu/+source/linux-gkeop-5.15/5.15.0-1024.29~20.04.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-78.85~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-78.85~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-oracle-5.15/5.15.0-1039.45~20.04.1