[USN-6777-1] Linux kernel vulnerabilities

Rodrigo Figueiredo Zaiden rodrigo.zaiden at canonical.com
Thu May 16 19:24:45 UTC 2024

Ubuntu Security Notice USN-6777-1
May 16, 2024

linux, linux-aws, linux-azure-4.15, linux-gcp-4.15, linux-hwe, linux-kvm,
linux-oracle vulnerabilities

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

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS


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-4.15: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp-4.15: Linux kernel for Google Cloud Platform (GCP) systems
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-hwe: Linux hardware enablement (HWE) kernel


Zheng Wang discovered that the Broadcom FullMAC WLAN driver in the Linux
kernel contained a race condition during device removal, leading to a use-
after-free vulnerability. A physically proximate attacker could possibly
use this to cause a denial of service (system crash). (CVE-2023-47233)

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:
   - Block layer subsystem;
   - Userspace I/O drivers;
   - Ceph distributed file system;
   - Ext4 file system;
   - JFS file system;
   - NILFS2 file system;
   - Bluetooth subsystem;
   - Networking core;
   - IPv4 networking;
   - IPv6 networking;
   - Logical Link layer;
   - MAC80211 subsystem;
   - Netlink;
   - NFC subsystem;
   - Tomoyo security module;
(CVE-2023-52524, CVE-2023-52530, CVE-2023-52601, CVE-2023-52439,
CVE-2024-26635, CVE-2023-52602, CVE-2024-26614, CVE-2024-26704,
CVE-2023-52604, CVE-2023-52566, CVE-2021-46981, CVE-2024-26622,
CVE-2024-26735, CVE-2024-26805, CVE-2024-26801, CVE-2023-52583)

Update instructions:

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

Ubuntu 18.04 LTS
   linux-image-4.15.0-1131-oracle  4.15.0-1131.142
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1152-kvm     4.15.0-1152.157
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1162-gcp     4.15.0-1162.179
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1168-aws     4.15.0-1168.181
                                   Available with Ubuntu Pro
   linux-image-4.15.0-1177-azure   4.15.0-1177.192
                                   Available with Ubuntu Pro
   linux-image-4.15.0-225-generic  4.15.0-225.237
                                   Available with Ubuntu Pro
   linux-image-4.15.0-225-lowlatency  4.15.0-225.237
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro

Ubuntu 16.04 LTS
   linux-image-4.15.0-1131-oracle  4.15.0-1131.142~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-225-generic  4.15.0-225.237~16.04.1
                                   Available with Ubuntu Pro
   linux-image-4.15.0-225-lowlatency  4.15.0-225.237~16.04.1
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   Available with Ubuntu Pro
                                   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.

   CVE-2021-46981, CVE-2023-47233, CVE-2023-52439, CVE-2023-52524,
   CVE-2023-52530, CVE-2023-52566, CVE-2023-52583, CVE-2023-52601,
   CVE-2023-52602, CVE-2023-52604, CVE-2024-26614, CVE-2024-26622,
   CVE-2024-26635, CVE-2024-26704, CVE-2024-26735, CVE-2024-26801,

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