==========================================================================
Ubuntu Security Notice USN-7184-1
January 06, 2025

linux-aws, linux-kvm vulnerabilities
==========================================================================

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

- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux-aws: Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm: Linux kernel for cloud environments

Details:

Ziming Zhang discovered that the VMware Virtual GPU DRM driver in the Linux
kernel contained an integer overflow vulnerability. A local attacker could
use this to cause a denial of service (system crash). (CVE-2022-36402)

Zheng Wang discovered a use-after-free in the Renesas Ethernet AVB driver
in the Linux kernel during device removal. A privileged attacker could use
this to cause a denial of service (system crash). (CVE-2023-35827)

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:
  - GPU drivers;
  - I2C subsystem;
  - Network drivers;
  - Pin controllers subsystem;
  - TTY drivers;
  - USB Mass Storage drivers;
  - Framebuffer layer;
  - Ext4 file system;
  - File systems infrastructure;
  - Bluetooth subsystem;
  - Kernel init infrastructure;
  - DMA mapping infrastructure;
  - Memory management;
  - 9P file system network protocol;
  - IPv4 networking;
  - IPv6 networking;
  - Logical Link layer;
  - MAC80211 subsystem;
  - Netfilter;
  - NFC subsystem;
  - Phonet protocol;
  - Network traffic control;
  - Wireless networking;
(CVE-2024-44944, CVE-2023-52507, CVE-2024-42101, CVE-2021-47118,
CVE-2024-36941, CVE-2024-38633, CVE-2021-47086, CVE-2024-26625,
CVE-2024-39301, CVE-2024-42090, CVE-2024-53057, CVE-2024-26777,
CVE-2024-36946, CVE-2024-42153, CVE-2024-40912, CVE-2024-36968,
CVE-2024-43856, CVE-2024-49967, CVE-2024-43884, CVE-2023-52509,
CVE-2023-52594, CVE-2024-36270, CVE-2024-44947, CVE-2024-45021,
CVE-2024-35886, CVE-2024-40959, CVE-2021-47501, CVE-2024-38619)

Update instructions:

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

Ubuntu 16.04 LTS
  linux-image-4.4.0-1140-kvm      4.4.0-1140.151
                                  Available with Ubuntu Pro
  linux-image-4.4.0-1177-aws      4.4.0-1177.192
                                  Available with Ubuntu Pro
  linux-image-aws                 4.4.0.1177.181
                                  Available with Ubuntu Pro
  linux-image-kvm                 4.4.0.1140.137
                                  Available with Ubuntu Pro

Ubuntu 14.04 LTS
  linux-image-4.4.0-1139-aws      4.4.0-1139.145
                                  Available with Ubuntu Pro
  linux-image-aws                 4.4.0.1139.136
                                  Available with Ubuntu Pro

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-7184-1
  CVE-2021-47086, CVE-2021-47118, CVE-2021-47501, CVE-2022-36402,
  CVE-2023-35827, CVE-2023-52507, CVE-2023-52509, CVE-2023-52594,
  CVE-2024-26625, CVE-2024-26777, CVE-2024-35886, CVE-2024-36270,
  CVE-2024-36941, CVE-2024-36946, CVE-2024-36968, CVE-2024-38619,
  CVE-2024-38633, CVE-2024-39301, CVE-2024-40912, CVE-2024-40959,
  CVE-2024-42090, CVE-2024-42101, CVE-2024-42153, CVE-2024-43856,
  CVE-2024-43884, CVE-2024-44944, CVE-2024-44947, CVE-2024-45021,
  CVE-2024-49967, CVE-2024-53057