==========================================================================
Ubuntu Security Notice USN-6446-1
October 20, 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-gke, linux-gkeop,
linux-hwe-5.15, linux-ibm, linux-ibm-5.15, linux-kvm, linux-lowlatency,
linux-lowlatency-hwe-5.15,linux-nvidia, linux-oracle, 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-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-hwe-5.15: Linux hardware enablement (HWE) kernel
- linux-ibm-5.15: Linux kernel for IBM cloud systems
- linux-lowlatency-hwe-5.15: Linux low latency kernel

Details:

Ross Lagerwall discovered that the Xen netback backend driver in the Linux
kernel did not properly handle certain unusual packets from a
paravirtualized network frontend, leading to a buffer overflow. An attacker
in a guest VM could use this to cause a denial of service (host system
crash) or possibly execute arbitrary code. (CVE-2023-34319)

Bien Pham discovered that the netfiler subsystem in the Linux kernel
contained a race condition, leading to a use-after-free vulnerability. A
local user could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-4244)

Kyle Zeng discovered that the networking stack implementation in the Linux
kernel did not properly validate skb object size in certain conditions. An
attacker could use this cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2023-42752)

Kyle Zeng discovered that the netfiler subsystem in the Linux kernel did
not properly calculate array offsets, leading to a out-of-bounds write
vulnerability. A local user could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-42753)

Kyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP)
classifier implementation in the Linux kernel contained an out-of-bounds
read vulnerability. A local attacker could use this to cause a denial of
service (system crash). Please note that kernel packet classifier support
for RSVP has been removed to resolve this vulnerability. (CVE-2023-42755)

Kyle Zeng discovered that the netfilter subsystem in the Linux kernel
contained a race condition in IP set operations in certain situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2023-42756)

Bing-Jhong Billy Jheng discovered that the Unix domain socket
implementation in the Linux kernel contained a race condition in certain
situations, 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-2023-4622)

Budimir Markovic discovered that the qdisc implementation in the Linux
kernel did not properly validate inner classes, leading to a use-after-free
vulnerability. A local user could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-4623)

Alex Birnberg discovered that the netfilter subsystem in the Linux kernel
did not properly validate register length, leading to an out-of- bounds
write vulnerability. A local attacker could possibly use this to cause a
denial of service (system crash). (CVE-2023-4881)

It was discovered that the Quick Fair Queueing scheduler implementation in
the Linux kernel did not properly handle network packets in certain
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-2023-4921)

Kevin Rich discovered that the netfilter subsystem in the Linux kernel did
not properly handle removal of rules from chain bindings in certain
circumstances, leading to a use-after-free vulnerability. A local attacker
could possibly use this to cause a denial of service (system crash) or
execute arbitrary code. (CVE-2023-5197)

Update instructions:

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

Ubuntu 22.04 LTS:
   linux-image-5.15.0-1031-gkeop   5.15.0-1031.37
   linux-image-5.15.0-1039-nvidia  5.15.0-1039.39
   linux-image-5.15.0-1039-nvidia-lowlatency  5.15.0-1039.39
   linux-image-5.15.0-1041-ibm     5.15.0-1041.44
   linux-image-5.15.0-1041-raspi   5.15.0-1041.44
   linux-image-5.15.0-1045-gcp     5.15.0-1045.53
   linux-image-5.15.0-1045-gke     5.15.0-1045.50
   linux-image-5.15.0-1045-kvm     5.15.0-1045.50
   linux-image-5.15.0-1046-oracle  5.15.0-1046.52
   linux-image-5.15.0-1048-aws     5.15.0-1048.53
   linux-image-5.15.0-1050-azure   5.15.0-1050.57
   linux-image-5.15.0-1050-azure-fde  5.15.0-1050.57.1
   linux-image-5.15.0-87-generic   5.15.0-87.97
   linux-image-5.15.0-87-generic-64k  5.15.0-87.97
   linux-image-5.15.0-87-generic-lpae  5.15.0-87.97
   linux-image-5.15.0-87-lowlatency  5.15.0-87.96
   linux-image-5.15.0-87-lowlatency-64k  5.15.0-87.96
   linux-image-aws-lts-22.04       5.15.0.1048.47
   linux-image-azure-fde-lts-22.04  5.15.0.1050.57.28
   linux-image-azure-lts-22.04     5.15.0.1050.46
   linux-image-gcp-lts-22.04       5.15.0.1045.41
   linux-image-generic             5.15.0.87.84
   linux-image-generic-64k         5.15.0.87.84
   linux-image-generic-lpae        5.15.0.87.84
   linux-image-gke                 5.15.0.1045.44
   linux-image-gke-5.15            5.15.0.1045.44
   linux-image-gkeop               5.15.0.1031.30
   linux-image-gkeop-5.15          5.15.0.1031.30
   linux-image-ibm                 5.15.0.1041.37
   linux-image-kvm                 5.15.0.1045.41
   linux-image-lowlatency          5.15.0.87.89
   linux-image-lowlatency-64k      5.15.0.87.89
   linux-image-nvidia              5.15.0.1039.39
   linux-image-nvidia-lowlatency   5.15.0.1039.39
   linux-image-oracle              5.15.0.1046.41
   linux-image-oracle-lts-22.04    5.15.0.1046.41
   linux-image-raspi               5.15.0.1041.39
   linux-image-raspi-nolpae        5.15.0.1041.39
   linux-image-virtual             5.15.0.87.84

Ubuntu 20.04 LTS:
   linux-image-5.15.0-1041-ibm     5.15.0-1041.44~20.04.1
   linux-image-5.15.0-1048-aws     5.15.0-1048.53~20.04.1
   linux-image-5.15.0-1050-azure   5.15.0-1050.57~20.04.1
   linux-image-5.15.0-1050-azure-fde  5.15.0-1050.57~20.04.1.1
   linux-image-5.15.0-87-generic   5.15.0-87.97~20.04.1
   linux-image-5.15.0-87-generic-64k  5.15.0-87.97~20.04.1
   linux-image-5.15.0-87-generic-lpae  5.15.0-87.97~20.04.1
   linux-image-5.15.0-87-lowlatency  5.15.0-87.96~20.04.1
   linux-image-5.15.0-87-lowlatency-64k  5.15.0-87.96~20.04.1
   linux-image-aws                 5.15.0.1048.53~20.04.36
   linux-image-azure               5.15.0.1050.57~20.04.39
   linux-image-azure-cvm           5.15.0.1050.57~20.04.39
   linux-image-azure-fde           5.15.0.1050.57~20.04.1.28
   linux-image-generic-64k-hwe-20.04  5.15.0.87.97~20.04.45
   linux-image-generic-hwe-20.04   5.15.0.87.97~20.04.45
   linux-image-generic-lpae-hwe-20.04  5.15.0.87.97~20.04.45
   linux-image-ibm                 5.15.0.1041.44~20.04.13
   linux-image-lowlatency-64k-hwe-20.04  5.15.0.87.96~20.04.42
   linux-image-lowlatency-hwe-20.04  5.15.0.87.96~20.04.42
   linux-image-oem-20.04           5.15.0.87.97~20.04.45
   linux-image-oem-20.04b          5.15.0.87.97~20.04.45
   linux-image-oem-20.04c          5.15.0.87.97~20.04.45
   linux-image-oem-20.04d          5.15.0.87.97~20.04.45
   linux-image-virtual-hwe-20.04   5.15.0.87.97~20.04.45

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-6446-1
   CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753,
   CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623,
   CVE-2023-4881, CVE-2023-4921, CVE-2023-5197

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.15.0-87.97
   https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1048.53
   https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1050.57
   https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1050.57.1
   https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1045.53
   https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1045.50
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1031.37
   https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1041.44
   https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1045.50
   https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-87.96
   https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1039.39
   https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1046.52
   https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1041.44
   https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1048.53~20.04.1
   https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1050.57~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1050.57~20.04.1.1
   https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-87.97~20.04.1
   https://launchpad.net/ubuntu/+source/linux-ibm-5.15/5.15.0-1041.44~20.04.1
 
https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-87.96~20.04.1

Ubuntu 6446-1: Linux kernel vulnerabilities

October 20, 2023
Several security issues were fixed in the Linux kernel.

Summary

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-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-hwe-5.15: Linux hardware enablement (HWE) kernel - linux-ibm-5.15: Linux kernel for IBM cloud systems - linux-lowlatency-hwe-5.15: Linux low latency kernel Details: Ross Lagerwall discovered that the Xen netback backend driver in the Linux kernel did not properly handle certain unusual packets from a paravirtualized network frontend, leading to a buffer overflow. An attacker in a guest VM could use this to cause a denial of service (host system crash) or possibly execute arbitrary code. (CVE-2023-34319) Bien Pham discovered that the netfiler subsystem in the Linux kernel contained a race condition, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4244) Kyle Zeng discovered that the networking stack implementation in the Linux kernel did not properly validate skb object size in certain conditions. An attacker could use this cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-42752) Kyle Zeng discovered that the netfiler subsystem in the Linux kernel did not properly calculate array offsets, leading to a out-of-bounds write vulnerability. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-42753) Kyle Zeng discovered that the IPv4 Resource Reservation Protocol (RSVP) classifier implementation in the Linux kernel contained an out-of-bounds read vulnerability. A local attacker could use this to cause a denial of service (system crash). Please note that kernel packet classifier support for RSVP has been removed to resolve this vulnerability. (CVE-2023-42755) Kyle Zeng discovered that the netfilter subsystem in the Linux kernel contained a race condition in IP set operations in certain situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2023-42756) Bing-Jhong Billy Jheng discovered that the Unix domain socket implementation in the Linux kernel contained a race condition in certain situations, 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-2023-4622) Budimir Markovic discovered that the qdisc implementation in the Linux kernel did not properly validate inner classes, leading to a use-after-free vulnerability. A local user could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2023-4623) Alex Birnberg discovered that the netfilter subsystem in the Linux kernel did not properly validate register length, leading to an out-of- bounds write vulnerability. A local attacker could possibly use this to cause a denial of service (system crash). (CVE-2023-4881) It was discovered that the Quick Fair Queueing scheduler implementation in the Linux kernel did not properly handle network packets in certain 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-2023-4921) Kevin Rich discovered that the netfilter subsystem in the Linux kernel did not properly handle removal of rules from chain bindings in certain circumstances, leading to a use-after-free vulnerability. A local attacker could possibly use this to cause a denial of service (system crash) or execute arbitrary code. (CVE-2023-5197)

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: linux-image-5.15.0-1031-gkeop 5.15.0-1031.37 linux-image-5.15.0-1039-nvidia 5.15.0-1039.39 linux-image-5.15.0-1039-nvidia-lowlatency 5.15.0-1039.39 linux-image-5.15.0-1041-ibm 5.15.0-1041.44 linux-image-5.15.0-1041-raspi 5.15.0-1041.44 linux-image-5.15.0-1045-gcp 5.15.0-1045.53 linux-image-5.15.0-1045-gke 5.15.0-1045.50 linux-image-5.15.0-1045-kvm 5.15.0-1045.50 linux-image-5.15.0-1046-oracle 5.15.0-1046.52 linux-image-5.15.0-1048-aws 5.15.0-1048.53 linux-image-5.15.0-1050-azure 5.15.0-1050.57 linux-image-5.15.0-1050-azure-fde 5.15.0-1050.57.1 linux-image-5.15.0-87-generic 5.15.0-87.97 linux-image-5.15.0-87-generic-64k 5.15.0-87.97 linux-image-5.15.0-87-generic-lpae 5.15.0-87.97 linux-image-5.15.0-87-lowlatency 5.15.0-87.96 linux-image-5.15.0-87-lowlatency-64k 5.15.0-87.96 linux-image-aws-lts-22.04 5.15.0.1048.47 linux-image-azure-fde-lts-22.04 5.15.0.1050.57.28 linux-image-azure-lts-22.04 5.15.0.1050.46 linux-image-gcp-lts-22.04 5.15.0.1045.41 linux-image-generic 5.15.0.87.84 linux-image-generic-64k 5.15.0.87.84 linux-image-generic-lpae 5.15.0.87.84 linux-image-gke 5.15.0.1045.44 linux-image-gke-5.15 5.15.0.1045.44 linux-image-gkeop 5.15.0.1031.30 linux-image-gkeop-5.15 5.15.0.1031.30 linux-image-ibm 5.15.0.1041.37 linux-image-kvm 5.15.0.1045.41 linux-image-lowlatency 5.15.0.87.89 linux-image-lowlatency-64k 5.15.0.87.89 linux-image-nvidia 5.15.0.1039.39 linux-image-nvidia-lowlatency 5.15.0.1039.39 linux-image-oracle 5.15.0.1046.41 linux-image-oracle-lts-22.04 5.15.0.1046.41 linux-image-raspi 5.15.0.1041.39 linux-image-raspi-nolpae 5.15.0.1041.39 linux-image-virtual 5.15.0.87.84 Ubuntu 20.04 LTS: linux-image-5.15.0-1041-ibm 5.15.0-1041.44~20.04.1 linux-image-5.15.0-1048-aws 5.15.0-1048.53~20.04.1 linux-image-5.15.0-1050-azure 5.15.0-1050.57~20.04.1 linux-image-5.15.0-1050-azure-fde 5.15.0-1050.57~20.04.1.1 linux-image-5.15.0-87-generic 5.15.0-87.97~20.04.1 linux-image-5.15.0-87-generic-64k 5.15.0-87.97~20.04.1 linux-image-5.15.0-87-generic-lpae 5.15.0-87.97~20.04.1 linux-image-5.15.0-87-lowlatency 5.15.0-87.96~20.04.1 linux-image-5.15.0-87-lowlatency-64k 5.15.0-87.96~20.04.1 linux-image-aws 5.15.0.1048.53~20.04.36 linux-image-azure 5.15.0.1050.57~20.04.39 linux-image-azure-cvm 5.15.0.1050.57~20.04.39 linux-image-azure-fde 5.15.0.1050.57~20.04.1.28 linux-image-generic-64k-hwe-20.04 5.15.0.87.97~20.04.45 linux-image-generic-hwe-20.04 5.15.0.87.97~20.04.45 linux-image-generic-lpae-hwe-20.04 5.15.0.87.97~20.04.45 linux-image-ibm 5.15.0.1041.44~20.04.13 linux-image-lowlatency-64k-hwe-20.04 5.15.0.87.96~20.04.42 linux-image-lowlatency-hwe-20.04 5.15.0.87.96~20.04.42 linux-image-oem-20.04 5.15.0.87.97~20.04.45 linux-image-oem-20.04b 5.15.0.87.97~20.04.45 linux-image-oem-20.04c 5.15.0.87.97~20.04.45 linux-image-oem-20.04d 5.15.0.87.97~20.04.45 linux-image-virtual-hwe-20.04 5.15.0.87.97~20.04.45 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-6446-1

CVE-2023-34319, CVE-2023-4244, CVE-2023-42752, CVE-2023-42753,

CVE-2023-42755, CVE-2023-42756, CVE-2023-4622, CVE-2023-4623,

CVE-2023-4881, CVE-2023-4921, CVE-2023-5197

Severity
Ubuntu Security Notice USN-6446-1

Package Information

https://launchpad.net/ubuntu/+source/linux/5.15.0-87.97 https://launchpad.net/ubuntu/+source/linux-aws/5.15.0-1048.53 https://launchpad.net/ubuntu/+source/linux-azure/5.15.0-1050.57 https://launchpad.net/ubuntu/+source/linux-azure-fde/5.15.0-1050.57.1 https://launchpad.net/ubuntu/+source/linux-gcp/5.15.0-1045.53 https://launchpad.net/ubuntu/+source/linux-gke/5.15.0-1045.50 https://launchpad.net/ubuntu/+source/linux-gkeop/5.15.0-1031.37 https://launchpad.net/ubuntu/+source/linux-ibm/5.15.0-1041.44 https://launchpad.net/ubuntu/+source/linux-kvm/5.15.0-1045.50 https://launchpad.net/ubuntu/+source/linux-lowlatency/5.15.0-87.96 https://launchpad.net/ubuntu/+source/linux-nvidia/5.15.0-1039.39 https://launchpad.net/ubuntu/+source/linux-oracle/5.15.0-1046.52 https://launchpad.net/ubuntu/+source/linux-raspi/5.15.0-1041.44 https://launchpad.net/ubuntu/+source/linux-aws-5.15/5.15.0-1048.53~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-5.15/5.15.0-1050.57~20.04.1 https://launchpad.net/ubuntu/+source/linux-azure-fde-5.15/5.15.0-1050.57~20.04.1.1 https://launchpad.net/ubuntu/+source/linux-hwe-5.15/5.15.0-87.97~20.04.1 https://launchpad.net/ubuntu/+source/linux-ibm-5.15/5.15.0-1041.44~20.04.1 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-5.15/5.15.0-87.96~20.04.1

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