1. Ubuntu Security Notices
  2. USN-6252-1

USN-6252-1: Linux kernel vulnerabilities

Publication date

26 July 2023

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux - Linux kernel
  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems
  • linux-aws-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems
  • linux-dell300x - Linux kernel for Dell 300x platforms
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-hwe - Linux hardware enablement (HWE) kernel
  • linux-kvm - Linux kernel for cloud environments
  • linux-oracle - Linux kernel for Oracle Cloud systems
  • linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors

Details

It was discovered that the ext4 file system implementation in the Linux
kernel contained a use-after-free vulnerability. An attacker could use this
to construct a malicious ext4 file system image that, when mounted, could
cause a denial of service (system crash). (CVE-2022-1184)

It was discovered that the sound subsystem in the Linux kernel contained a
race condition in some situations. A local attacker could use this to cause
a denial of service (system crash). (CVE-2022-3303)

It was discovered that a race condition existed in the btrfs file system
implementation 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 expose sensitive information. (CVE-2023-1611)

It was discovered that the Xircom PCMCIA network device...

It was discovered that the ext4 file system implementation in the Linux
kernel contained a use-after-free vulnerability. An attacker could use this
to construct a malicious ext4 file system image that, when mounted, could
cause a denial of service (system crash). (CVE-2022-1184)

It was discovered that the sound subsystem in the Linux kernel contained a
race condition in some situations. A local attacker could use this to cause
a denial of service (system crash). (CVE-2022-3303)

It was discovered that a race condition existed in the btrfs file system
implementation 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 expose sensitive information. (CVE-2023-1611)

It was discovered that the Xircom PCMCIA network device driver in the Linux
kernel did not properly handle device removal events. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2023-1670)

It was discovered that a race condition existed in the Xen transport layer
implementation for the 9P file system protocol in the Linux kernel, leading
to a use-after-free vulnerability. A local attacker could use this to cause
a denial of service (guest crash) or expose sensitive information (guest
kernel memory). (CVE-2023-1859)

It was discovered that the ST NCI NFC driver did not properly handle device
removal events. A physically proximate attacker could use this to cause a
denial of service (system crash). (CVE-2023-1990)

It was discovered that the XFS file system implementation in the Linux
kernel did not properly perform metadata validation when mounting certain
images. An attacker could use this to specially craft a file system image
that, when mounted, could cause a denial of service (system crash).
(CVE-2023-2124)

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)

It was discovered that the btrfs file system implementation in the Linux
kernel did not properly handle error conditions in some situations, leading
to a use-after-free vulnerability. A local attacker could possibly use this
to cause a denial of service (system crash). (CVE-2023-3111)

It was discovered that the Ricoh R5C592 MemoryStick card reader driver in
the Linux kernel contained a race condition during module unload, 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-2023-3141)

It was discovered that the kernel->user space relay implementation in the
Linux kernel did not properly perform certain buffer calculations, leading
to an out-of-bounds read vulnerability. A local attacker could use this to
cause a denial of service (system crash) or expose sensitive information
(kernel memory). (CVE-2023-3268)

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)

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

After a standard system update you need to reboot your computer to make all the necessary changes.

Learn more about how to get the fixes.

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.

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

Ubuntu Release Package Version
18.04 bionic linux-image-4.15.0-1068-dell300x –  4.15.0-1068.73  
linux-image-4.15.0-1122-oracle –  4.15.0-1122.133  
linux-image-4.15.0-1143-kvm –  4.15.0-1143.148  
linux-image-4.15.0-1153-gcp –  4.15.0-1153.170  
linux-image-4.15.0-1153-snapdragon –  4.15.0-1153.163  
linux-image-4.15.0-1159-aws –  4.15.0-1159.172  
linux-image-4.15.0-1168-azure –  4.15.0-1168.183  
linux-image-4.15.0-214-generic –  4.15.0-214.225  
linux-image-4.15.0-214-generic-lpae –  4.15.0-214.225  
linux-image-4.15.0-214-lowlatency –  4.15.0-214.225  
linux-image-aws-lts-18.04 –  4.15.0.1159.157  
linux-image-azure-lts-18.04 –  4.15.0.1168.136  
linux-image-dell300x –  4.15.0.1068.67  
linux-image-gcp-lts-18.04 –  4.15.0.1153.167  
linux-image-generic –  4.15.0.214.197  
linux-image-generic-lpae –  4.15.0.214.197  
linux-image-kvm –  4.15.0.1143.134  
linux-image-lowlatency –  4.15.0.214.197  
linux-image-oracle-lts-18.04 –  4.15.0.1122.127  
linux-image-snapdragon –  4.15.0.1153.152  
linux-image-virtual –  4.15.0.214.197  
16.04 xenial linux-image-4.15.0-1122-oracle –  4.15.0-1122.133~16.04.1  
linux-image-4.15.0-1153-gcp –  4.15.0-1153.170~16.04.1  
linux-image-4.15.0-1159-aws –  4.15.0-1159.172~16.04.1  
linux-image-4.15.0-1168-azure –  4.15.0-1168.183~16.04.1  
linux-image-4.15.0-214-generic –  4.15.0-214.225~16.04.1  
linux-image-4.15.0-214-lowlatency –  4.15.0-214.225~16.04.1  
linux-image-aws-hwe –  4.15.0.1159.142  
linux-image-azure –  4.15.0.1168.152  
linux-image-gcp –  4.15.0.1153.143  
linux-image-generic-hwe-16.04 –  4.15.0.214.199  
linux-image-gke –  4.15.0.1153.143  
linux-image-lowlatency-hwe-16.04 –  4.15.0.214.199  
linux-image-oem –  4.15.0.214.199  
linux-image-oracle –  4.15.0.1122.103  
linux-image-virtual-hwe-16.04 –  4.15.0.214.199  
14.04 trusty linux-image-4.15.0-1168-azure –  4.15.0-1168.183~14.04.1  
linux-image-azure –  4.15.0.1168.134  

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References

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