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Ubuntu Security Notice USN-6701-1

Ubuntu Security Notice USN-6701-1
Posted Mar 19, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6701-1 - Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did not properly perform permissions checks when handling HCI sockets. A physically proximate attacker could use this to cause a denial of service. 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.

tags | advisory, denial of service, kernel, local
systems | linux, ubuntu
advisories | CVE-2023-2002, CVE-2023-23000, CVE-2023-3006, CVE-2023-34256, CVE-2023-39197, CVE-2023-4132, CVE-2023-46838, CVE-2023-51781, CVE-2023-6121, CVE-2024-0775, CVE-2024-1086, CVE-2024-24855
SHA-256 | 0833ffba4bae800112f39bda1a9de1cfd5e670b6c7f675b6d89f769e4de4aba7

Ubuntu Security Notice USN-6701-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6701-1
March 18, 2024

linux, linux-aws, linux-hwe, linux-kvm, linux-oracle vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

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-kvm: Linux kernel for cloud environments
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-hwe: Linux hardware enablement (HWE) kernel

Details:

Ruihan Li discovered that the bluetooth subsystem in the Linux kernel did
not properly perform permissions checks when handling HCI sockets. A
physically proximate attacker could use this to cause a denial of service
(bluetooth communication). (CVE-2023-2002)

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 Spectre-BHB mitigations were missing for Ampere
processors. A local attacker could potentially use this to expose sensitive
information. (CVE-2023-3006)

It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle block device modification while it is
mounted. A privileged attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2023-34256)

Eric Dumazet discovered that the netfilter subsystem in the Linux kernel
did not properly handle DCCP conntrack buffers in certain situations,
leading to an out-of-bounds read vulnerability. An attacker could possibly
use this to expose sensitive information (kernel memory). (CVE-2023-39197)

It was discovered that the Siano USB MDTV receiver device driver in the
Linux kernel did not properly handle device initialization failures in
certain situations, leading to a use-after-free vulnerability. A physically
proximate attacker could use this cause a denial of service (system crash).
(CVE-2023-4132)

Pratyush Yadav discovered that the Xen network backend implementation in
the Linux kernel did not properly handle zero length data request, leading
to a null pointer dereference vulnerability. An attacker in a guest VM
could possibly use this to cause a denial of service (host domain crash).
(CVE-2023-46838)

It was discovered that a race condition existed in the AppleTalk networking
subsystem of the Linux kernel, 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-2023-51781)

Alon Zahavi discovered that the NVMe-oF/TCP subsystem of the Linux kernel
did not properly handle connect command payloads in certain situations,
leading to an out-of-bounds read vulnerability. A remote attacker could use
this to expose sensitive information (kernel memory). (CVE-2023-6121)

It was discovered that the ext4 file system implementation in the Linux
kernel did not properly handle the remount operation 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 expose sensitive
information. (CVE-2024-0775)

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 18.04 LTS (Available with Ubuntu Pro):
linux-image-4.15.0-1129-oracle 4.15.0-1129.140
linux-image-4.15.0-1150-kvm 4.15.0-1150.155
linux-image-4.15.0-1166-aws 4.15.0-1166.179
linux-image-4.15.0-223-generic 4.15.0-223.235
linux-image-4.15.0-223-lowlatency 4.15.0-223.235
linux-image-aws-lts-18.04 4.15.0.1166.164
linux-image-generic 4.15.0.223.207
linux-image-kvm 4.15.0.1150.141
linux-image-lowlatency 4.15.0.223.207
linux-image-oracle-lts-18.04 4.15.0.1129.134
linux-image-virtual 4.15.0.223.207

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
linux-image-4.15.0-223-generic 4.15.0-223.235~16.04.1
linux-image-4.15.0-223-lowlatency 4.15.0-223.235~16.04.1
linux-image-generic-hwe-16.04 4.15.0.223.7
linux-image-lowlatency-hwe-16.04 4.15.0.223.7
linux-image-oem 4.15.0.223.7
linux-image-virtual-hwe-16.04 4.15.0.223.7

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-6701-1
CVE-2023-2002, CVE-2023-23000, CVE-2023-3006, CVE-2023-34256,
CVE-2023-39197, CVE-2023-4132, CVE-2023-46838, CVE-2023-51781,
CVE-2023-6121, CVE-2024-0775, CVE-2024-1086, CVE-2024-24855

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