USN-6739-1: Linux kernel vulnerabilities
19 April 2024
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux - Linux kernel
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-kvm - Linux kernel for cloud environments
- linux-lts-xenial - Linux hardware enablement kernel from Xenial for Trusty
Details
It was discovered that a race condition existed in the instruction emulator
of the Linux kernel on Arm 64-bit systems. A local attacker could use this
to cause a denial of service (system crash). (CVE-2022-20422)
Wei Chen discovered that a race condition existed in the TIPC protocol
implementation in the Linux kernel, leading to a null pointer dereference
vulnerability. A local attacker could use this to cause a denial of service
(system crash). (CVE-2023-1382)
Jose Oliveira and Rodrigo Branco discovered that the Spectre Variant 2
mitigations with prctl syscall were insufficient in some situations. A
local attacker could possibly use this to expose sensitive information.
(CVE-2023-1998)
Daniele Antonioli discovered that the Secure Simple Pairing and Secure
Connections pairing in the Bluetooth protocol could allow an
unauthenticated user to complete authentication without pairing
credentials. A physically proximate attacker placed between two Bluetooth
devices could use this to subsequently impersonate one of the paired
devices. (CVE-2023-24023)
shanzhulig discovered that the DRM subsystem in the Linux kernel contained
a race condition when performing certain operation while handling driver
unload, 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-2023-51043)
It was discovered that a race condition existed in the Bluetooth 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-2023-51779)
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)
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:
- Architecture specifics;
- ACPI drivers;
- I2C subsystem;
- Media drivers;
- JFS file system;
- IPv4 Networking;
- Open vSwitch;
(CVE-2021-46966, CVE-2021-46936, CVE-2023-52451, CVE-2019-25162,
CVE-2023-52445, CVE-2023-52600, CVE-2021-46990, CVE-2021-46955,
CVE-2023-52603)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
linux-image-4.4.0-1131-kvm
-
4.4.0-1131.141
Available with Ubuntu Pro
-
linux-image-4.4.0-1168-aws
-
4.4.0-1168.183
Available with Ubuntu Pro
-
linux-image-4.4.0-253-generic
-
4.4.0-253.287
Available with Ubuntu Pro
-
linux-image-4.4.0-253-lowlatency
-
4.4.0-253.287
Available with Ubuntu Pro
-
linux-image-aws
-
4.4.0.1168.172
Available with Ubuntu Pro
-
linux-image-generic
-
4.4.0.253.259
Available with Ubuntu Pro
-
linux-image-generic-lts-xenial
-
4.4.0.253.259
Available with Ubuntu Pro
-
linux-image-kvm
-
4.4.0.1131.128
Available with Ubuntu Pro
-
linux-image-lowlatency
-
4.4.0.253.259
Available with Ubuntu Pro
-
linux-image-lowlatency-lts-xenial
-
4.4.0.253.259
Available with Ubuntu Pro
-
linux-image-virtual
-
4.4.0.253.259
Available with Ubuntu Pro
-
linux-image-virtual-lts-xenial
-
4.4.0.253.259
Available with Ubuntu Pro
Ubuntu 14.04
-
linux-image-4.4.0-1130-aws
-
4.4.0-1130.136
Available with Ubuntu Pro
-
linux-image-4.4.0-253-generic
-
4.4.0-253.287~14.04.1
Available with Ubuntu Pro
-
linux-image-4.4.0-253-lowlatency
-
4.4.0-253.287~14.04.1
Available with Ubuntu Pro
-
linux-image-aws
-
4.4.0.1130.127
Available with Ubuntu Pro
-
linux-image-generic-lts-xenial
-
4.4.0.253.287~14.04.1
Available with Ubuntu Pro
-
linux-image-lowlatency-lts-xenial
-
4.4.0.253.287~14.04.1
Available with Ubuntu Pro
-
linux-image-virtual-lts-xenial
-
4.4.0.253.287~14.04.1
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.
Related notices
- USN-6000-1
- USN-6740-1
- USN-6688-1
- USN-6725-1
- USN-6726-1
- USN-6725-2
- USN-6726-2
- USN-6726-3
- USN-6818-1
- USN-6819-1
- USN-6818-2
- USN-6819-2
- USN-6819-3
- USN-6818-3
- USN-6818-4
- USN-6819-4
- USN-6741-1
- USN-6742-1
- USN-6743-1
- USN-6743-2
- USN-6742-2
- USN-6743-3
- USN-6724-1
- USN-6724-2
- USN-5727-1
- USN-5728-1
- USN-5729-1
- USN-5727-2
- USN-5728-2
- USN-5729-2
- USN-5728-3
- USN-5774-1
- USN-6033-1
- USN-6171-1
- USN-6172-1
- USN-6185-1
- USN-6187-1
- USN-6207-1
- USN-6222-1
- USN-6223-1
- USN-6256-1
- USN-6606-1
- USN-6680-1
- USN-6681-1
- USN-6686-1
- USN-6680-2
- USN-6681-2
- USN-6686-2
- USN-6681-3
- USN-6680-3
- USN-6686-3
- USN-6681-4
- USN-6686-4
- USN-6705-1
- USN-6716-1
- USN-6686-5