==========================================================================
Ubuntu Security Notice USN-6702-1
March 19, 2024

linux, linux-bluefield, linux-gcp, linux-gkeop, linux-hwe-5.4, linux-ibm,
linux-ibm-5.4, linux-iot, linux-kvm, linux-oracle, linux-oracle-5.4
vulnerabilities
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in the Linux kernel.

Software Description:
- linux: Linux kernel
- linux-bluefield: Linux kernel for NVIDIA BlueField platforms
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-gkeop: Linux kernel for Google Container Engine (GKE) systems
- linux-ibm: Linux kernel for IBM cloud systems
- linux-iot: Linux kernel for IoT platforms
- linux-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-hwe-5.4: Linux hardware enablement (HWE) kernel
- linux-ibm-5.4: Linux kernel for IBM cloud systems
- linux-oracle-5.4: Linux kernel for Oracle Cloud systems

Details:

It was discovered that the NVIDIA Tegra XUSB pad controller driver in the
Linux kernel did not properly handle return values in certain error
conditions. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-23000)

It was discovered that the ARM Mali Display Processor driver implementation
in the Linux kernel did not properly handle certain error conditions. A
local attacker could possibly use this to cause a denial of service (system
crash). (CVE-2023-23004)

Notselwyn discovered that the netfilter subsystem in the Linux kernel did
not properly handle verdict parameters in certain cases, 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-2024-1086)

It was discovered that a race condition existed in the SCSI Emulex
LightPulse Fibre Channel driver in the Linux kernel when unregistering FCF
and re-scanning an HBA FCF table, leading to a null pointer dereference
vulnerability. A local attacker could use this to cause a denial of service
(system crash). (CVE-2024-24855)

Update instructions:

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

Ubuntu 20.04 LTS:
   linux-image-5.4.0-1033-iot      5.4.0-1033.34
   linux-image-5.4.0-1068-ibm      5.4.0-1068.73
   linux-image-5.4.0-1081-bluefield  5.4.0-1081.88
   linux-image-5.4.0-1088-gkeop    5.4.0-1088.92
   linux-image-5.4.0-1109-kvm      5.4.0-1109.116
   linux-image-5.4.0-1120-oracle   5.4.0-1120.129
   linux-image-5.4.0-1125-gcp      5.4.0-1125.134
   linux-image-5.4.0-174-generic   5.4.0-174.193
   linux-image-5.4.0-174-generic-lpae  5.4.0-174.193
   linux-image-5.4.0-174-lowlatency  5.4.0-174.193
   linux-image-bluefield           5.4.0.1081.77
   linux-image-gcp-lts-20.04       5.4.0.1125.127
   linux-image-generic             5.4.0.174.172
   linux-image-generic-lpae        5.4.0.174.172
   linux-image-gkeop               5.4.0.1088.86
   linux-image-gkeop-5.4           5.4.0.1088.86
   linux-image-ibm-lts-20.04       5.4.0.1068.97
   linux-image-kvm                 5.4.0.1109.105
   linux-image-lowlatency          5.4.0.174.172
   linux-image-oem                 5.4.0.174.172
   linux-image-oem-osp1            5.4.0.174.172
   linux-image-oracle-lts-20.04    5.4.0.1120.113
   linux-image-virtual             5.4.0.174.172

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   linux-image-5.4.0-1068-ibm      5.4.0-1068.73~18.04.1
   linux-image-5.4.0-1120-oracle   5.4.0-1120.129~18.04.1
   linux-image-5.4.0-174-generic   5.4.0-174.193~18.04.1
   linux-image-5.4.0-174-lowlatency  5.4.0-174.193~18.04.1
   linux-image-generic-hwe-18.04   5.4.0.174.193~18.04.142
   linux-image-ibm                 5.4.0.1068.78
   linux-image-lowlatency-hwe-18.04  5.4.0.174.193~18.04.142
   linux-image-oem                 5.4.0.174.193~18.04.142
   linux-image-oem-osp1            5.4.0.174.193~18.04.142
   linux-image-oracle              5.4.0.1120.129~18.04.92
   linux-image-snapdragon-hwe-18.04  5.4.0.174.193~18.04.142
   linux-image-virtual-hwe-18.04   5.4.0.174.193~18.04.142

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-6702-1
   CVE-2023-23000, CVE-2023-23004, CVE-2024-1086, CVE-2024-24855

Package Information:
   https://launchpad.net/ubuntu/+source/linux/5.4.0-174.193
   https://launchpad.net/ubuntu/+source/linux-bluefield/5.4.0-1081.88
   https://launchpad.net/ubuntu/+source/linux-gcp/5.4.0-1125.134
   https://launchpad.net/ubuntu/+source/linux-gkeop/5.4.0-1088.92
   https://launchpad.net/ubuntu/+source/linux-ibm/5.4.0-1068.73
   https://launchpad.net/ubuntu/+source/linux-iot/5.4.0-1033.34
   https://launchpad.net/ubuntu/+source/linux-kvm/5.4.0-1109.116
   https://launchpad.net/ubuntu/+source/linux-oracle/5.4.0-1120.129