1. Ubuntu Security Notices
  2. USN-7506-2

USN-7506-2: Linux kernel (AWS) vulnerabilities

Publication date

12 May 2025

Overview

Several security issues were fixed in the Linux kernel.

Releases

Packages

  • linux-aws - Linux kernel for Amazon Web Services (AWS) systems

Details

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-
virtualization device frontends did not properly restrict the access rights
of device backends. An attacker could possibly use a malicious Xen backend
to gain access to memory pages of a guest VM or cause a denial of service
in the guest. (CVE-2022-23041)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • Hardware crypto device drivers;
  • GPU drivers;
  • IIO subsystem;
  • Media drivers;
  • Network drivers;
  • SCSI subsystem;
  • SPI subsystem;
  • USB Gadget drivers;
  • Ceph distributed file system;
  • File systems infrastructure;
  • JFS file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server...

Demi Marie Obenour and Simon Gaiser discovered that several Xen para-
virtualization device frontends did not properly restrict the access rights
of device backends. An attacker could possibly use a malicious Xen backend
to gain access to memory pages of a guest VM or cause a denial of service
in the guest. (CVE-2022-23041)

Several security issues were discovered in the Linux kernel.
An attacker could possibly use these to compromise the system.
This update corrects flaws in the following subsystems:

  • Hardware crypto device drivers;
  • GPU drivers;
  • IIO subsystem;
  • Media drivers;
  • Network drivers;
  • SCSI subsystem;
  • SPI subsystem;
  • USB Gadget drivers;
  • Ceph distributed file system;
  • File systems infrastructure;
  • JFS file system;
  • Network file system (NFS) client;
  • Network file system (NFS) server daemon;
  • NILFS2 file system;
  • SMB network file system;
  • CAN network layer;
  • IPv6 networking;
  • MAC80211 subsystem;
  • Netfilter;
  • Netlink;
  • Network traffic control;
  • SCTP protocol;
  • TIPC protocol

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
14.04 trusty linux-image-4.4.0-1143-aws –  4.4.0-1143.149  
linux-image-aws –  4.4.0.1143.140  

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References

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