==========================================================================
Ubuntu Security Notice USN-6724-1
April 09, 2024
linux, linux-aws, linux-azure, linux-azure-6.5, linux-gcp, linux-gcp-6.5,
linux-hwe-6.5, linux-laptop, linux-lowlatency, linux-lowlatency-hwe-6.5,
linux-oem-6.5, linux-oracle, linux-oracle-6.5, linux-starfive,
linux-starfive-6.5 vulnerabilities
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
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-azure: Linux kernel for Microsoft Azure Cloud systems
- linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems
- linux-laptop: Linux kernel for Lenovo X13s ARM laptops
- linux-lowlatency: Linux low latency kernel
- linux-oracle: Linux kernel for Oracle Cloud systems
- linux-starfive: Linux kernel for StarFive processors
- linux-azure-6.5: Linux kernel for Microsoft Azure cloud systems
- linux-gcp-6.5: Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe-6.5: Linux hardware enablement (HWE) kernel
- linux-lowlatency-hwe-6.5: Linux low latency kernel
- linux-oem-6.5: Linux kernel for OEM systems
- linux-oracle-6.5: Linux kernel for Oracle Cloud systems
- linux-starfive-6.5: Linux kernel for StarFive processors
Details:
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 the Habana's AI Processors driver in the Linux
kernel did not properly initialize certain data structures before passing
them to user space. A local attacker could use this to expose sensitive
information (kernel memory). (CVE-2023-50431)
It was discovered that the device mapper driver in the Linux kernel did not
properly validate target size during certain memory allocations. A local
attacker could use this to cause a denial of service (system crash).
(CVE-2023-52429, CVE-2024-23851)
It was discovered that the CIFS network file system implementation in the
Linux kernel did not properly validate certain SMB messages, leading to an
out-of-bounds read vulnerability. An attacker could use this to cause a
denial of service (system crash) or possibly expose sensitive information.
(CVE-2023-6610)
Yang Chaoming discovered that the KSMBD implementation in the Linux kernel
did not properly validate request buffer sizes, leading to an out-of-bounds
read vulnerability. An attacker could use this to cause a denial of service
(system crash) or possibly expose sensitive information. (CVE-2024-22705)
Chenyuan Yang discovered that the btrfs file system in the Linux kernel did
not properly handle read operations on newly created subvolumes in certain
conditions. A local attacker could use this to cause a denial of service
(system crash). (CVE-2024-23850)
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:
   - Android drivers;
   - Userspace I/O drivers;
   - F2FS file system;
   - SMB network file system;
   - Networking core;
(CVE-2023-52434, CVE-2023-52436, CVE-2023-52435, CVE-2023-52439,
CVE-2023-52438)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
   linux-image-6.5.0-1011-starfive  6.5.0-1011.12
   linux-image-6.5.0-1013-laptop   6.5.0-1013.16
   linux-image-6.5.0-1017-aws      6.5.0-1017.17
   linux-image-6.5.0-1017-gcp      6.5.0-1017.17
   linux-image-6.5.0-1018-azure    6.5.0-1018.19
   linux-image-6.5.0-1018-azure-fde  6.5.0-1018.19
   linux-image-6.5.0-1020-oracle   6.5.0-1020.20
   linux-image-6.5.0-1020-oracle-64k  6.5.0-1020.20
   linux-image-6.5.0-27-generic    6.5.0-27.28
   linux-image-6.5.0-27-generic-64k  6.5.0-27.28
   linux-image-6.5.0-27-lowlatency  6.5.0-27.28.1
   linux-image-6.5.0-27-lowlatency-64k  6.5.0-27.28.1
   linux-image-aws                 6.5.0.1017.17
   linux-image-azure               6.5.0.1018.22
   linux-image-azure-fde           6.5.0.1018.22
   linux-image-gcp                 6.5.0.1017.17
   linux-image-generic             6.5.0.27.27
   linux-image-generic-64k         6.5.0.27.27
   linux-image-generic-lpae        6.5.0.27.27
   linux-image-kvm                 6.5.0.27.27
   linux-image-laptop-23.10        6.5.0.1013.16
   linux-image-lowlatency          6.5.0.27.28.18
   linux-image-lowlatency-64k      6.5.0.27.28.18
   linux-image-oracle              6.5.0.1020.22
   linux-image-oracle-64k          6.5.0.1020.22
   linux-image-starfive            6.5.0.1011.13
   linux-image-virtual             6.5.0.27.27
Ubuntu 22.04 LTS:
   linux-image-6.5.0-1011-starfive  6.5.0-1011.12~22.04.1
   linux-image-6.5.0-1017-gcp      6.5.0-1017.17~22.04.1
   linux-image-6.5.0-1018-azure    6.5.0-1018.19~22.04.2
   linux-image-6.5.0-1018-azure-fde  6.5.0-1018.19~22.04.2
   linux-image-6.5.0-1019-oem      6.5.0-1019.20
   linux-image-6.5.0-1020-oracle   6.5.0-1020.20~22.04.1
   linux-image-6.5.0-1020-oracle-64k  6.5.0-1020.20~22.04.1
   linux-image-6.5.0-27-generic    6.5.0-27.28~22.04.1
   linux-image-6.5.0-27-generic-64k  6.5.0-27.28~22.04.1
   linux-image-6.5.0-27-lowlatency  6.5.0-27.28.1~22.04.1
   linux-image-6.5.0-27-lowlatency-64k  6.5.0-27.28.1~22.04.1
   linux-image-azure               6.5.0.1018.19~22.04.2
   linux-image-azure-fde           6.5.0.1018.19~22.04.2
   linux-image-gcp                 6.5.0.1017.17~22.04.1
   linux-image-generic-64k-hwe-22.04  6.5.0.27.28~22.04.1
   linux-image-generic-hwe-22.04   6.5.0.27.28~22.04.1
   linux-image-lowlatency-64k-hwe-22.04  6.5.0.27.28.1~22.04.1
   linux-image-lowlatency-hwe-22.04  6.5.0.27.28.1~22.04.1
   linux-image-oem-22.04           6.5.0.1019.21
   linux-image-oem-22.04a          6.5.0.1019.21
   linux-image-oem-22.04b          6.5.0.1019.21
   linux-image-oem-22.04c          6.5.0.1019.21
   linux-image-oem-22.04d          6.5.0.1019.21
   linux-image-oracle              6.5.0.1020.20~22.04.1
   linux-image-oracle-64k          6.5.0.1020.20~22.04.1
   linux-image-starfive            6.5.0.1011.12~22.04.1
   linux-image-virtual-hwe-22.04   6.5.0.27.28~22.04.1
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-6724-1
   CVE-2023-46838, CVE-2023-50431, CVE-2023-52429, CVE-2023-52434,
   CVE-2023-52435, CVE-2023-52436, CVE-2023-52438, CVE-2023-52439,
   CVE-2023-6610, CVE-2024-22705, CVE-2024-23850, CVE-2024-23851
Package Information:
   https://launchpad.net/ubuntu/+source/linux/6.5.0-27.28
   https://launchpad.net/ubuntu/+source/linux-aws/6.5.0-1017.17
   https://launchpad.net/ubuntu/+source/linux-azure/6.5.0-1018.19
   https://launchpad.net/ubuntu/+source/linux-gcp/6.5.0-1017.17
   https://launchpad.net/ubuntu/+source/linux-laptop/6.5.0-1013.16
   https://launchpad.net/ubuntu/+source/linux-lowlatency/6.5.0-27.28.1
   https://launchpad.net/ubuntu/+source/linux-oracle/6.5.0-1020.20
   https://launchpad.net/ubuntu/+source/linux-starfive/6.5.0-1011.12
   https://launchpad.net/ubuntu/+source/linux-azure-6.5/6.5.0-1018.19~22.04.2
   https://launchpad.net/ubuntu/+source/linux-gcp-6.5/6.5.0-1017.17~22.04.1
   https://launchpad.net/ubuntu/+source/linux-hwe-6.5/6.5.0-27.28~22.04.1
 https://launchpad.net/ubuntu/+source/linux-lowlatency-hwe-6.5/6.5.0-27.28.1~22.04.1
   https://launchpad.net/ubuntu/+source/linux-oem-6.5/6.5.0-1019.20
   https://launchpad.net/ubuntu/+source/linux-oracle-6.5/6.5.0-1020.20~22.04.1
 https://launchpad.net/ubuntu/+source/linux-starfive-6.5/6.5.0-1011.12~22.04.1