1. Ubuntu Security Notices
  2. USN-6496-2

USN-6496-2: Linux kernel vulnerabilities

Publication date

30 November 2023

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-azure - Linux kernel for Microsoft Azure Cloud systems
  • linux-azure-5.15 - Linux kernel for Microsoft Azure cloud systems
  • linux-azure-fde - Linux kernel for Microsoft Azure CVM cloud systems
  • linux-azure-fde-5.15 - Linux kernel for Microsoft Azure CVM cloud systems
  • linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
  • linux-gcp-5.15 - 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-gkeop-5.15 - Linux kernel for Google Container Engine (GKE) systems

Details

Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem
discovered that the InfiniBand RDMA driver in the Linux kernel did not
properly check for zero-length STAG or MR registration. A remote attacker
could possibly use this to execute arbitrary code. (CVE-2023-25775)

Yu Hao discovered that the UBI driver in the Linux kernel did not properly
check for MTD with zero erasesize during device attachment. A local
privileged attacker could use this to cause a denial of service (system
crash). (CVE-2023-31085)

Manfred Rudigier discovered that the Intel(R) PCI-Express Gigabit (igb)
Ethernet driver in the Linux kernel did not properly validate received
frames that are larger than the set MTU size, leading to a buffer overflow
vulnerability. An attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary...

Ivan D Barrera, Christopher Bednarz, Mustafa Ismail, and Shiraz Saleem
discovered that the InfiniBand RDMA driver in the Linux kernel did not
properly check for zero-length STAG or MR registration. A remote attacker
could possibly use this to execute arbitrary code. (CVE-2023-25775)

Yu Hao discovered that the UBI driver in the Linux kernel did not properly
check for MTD with zero erasesize during device attachment. A local
privileged attacker could use this to cause a denial of service (system
crash). (CVE-2023-31085)

Manfred Rudigier discovered that the Intel(R) PCI-Express Gigabit (igb)
Ethernet driver in the Linux kernel did not properly validate received
frames that are larger than the set MTU size, leading to a buffer overflow
vulnerability. An attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2023-45871)

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
22.04 jammy linux-image-5.15.0-1033-gkeop –  5.15.0-1033.39
linux-image-5.15.0-1047-gcp –  5.15.0-1047.55
linux-image-5.15.0-1047-gke –  5.15.0-1047.52
linux-image-5.15.0-1052-azure –  5.15.0-1052.60
linux-image-5.15.0-1052-azure-fde –  5.15.0-1052.60.1
linux-image-azure-fde-lts-22.04 –  5.15.0.1052.60.30
linux-image-azure-lts-22.04 –  5.15.0.1052.48
linux-image-gcp-lts-22.04 –  5.15.0.1047.43
linux-image-gke –  5.15.0.1047.46
linux-image-gke-5.15 –  5.15.0.1047.46
linux-image-gkeop –  5.15.0.1033.32
linux-image-gkeop-5.15 –  5.15.0.1033.32
20.04 focal linux-image-5.15.0-1033-gkeop –  5.15.0-1033.39~20.04.1
linux-image-5.15.0-1047-gcp –  5.15.0-1047.55~20.04.1
linux-image-5.15.0-1052-azure –  5.15.0-1052.60~20.04.1
linux-image-5.15.0-1052-azure-fde –  5.15.0-1052.60~20.04.1.1
linux-image-azure –  5.15.0.1052.60~20.04.41
linux-image-azure-cvm –  5.15.0.1052.60~20.04.41
linux-image-azure-fde –  5.15.0.1052.60~20.04.1.30
linux-image-gcp –  5.15.0.1047.55~20.04.1
linux-image-gkeop-5.15 –  5.15.0.1033.39~20.04.29

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References

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