USN-6185-1: Linux kernel vulnerabilities
22 June 2023
Several security issues were fixed in the Linux kernel.
Releases
Packages
- linux-aws - Linux kernel for Amazon Web Services (AWS) systems
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
- linux-bluefield - Linux kernel for NVIDIA BlueField platforms
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke - Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
- linux-ibm - Linux kernel for IBM cloud systems
- linux-kvm - Linux kernel for cloud environments
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-raspi - Linux kernel for Raspberry Pi systems
Details
It was discovered that the TUN/TAP driver in the Linux kernel did not
properly initialize socket data. A local attacker could use this to cause a
denial of service (system crash). (CVE-2023-1076)
It was discovered that the Real-Time Scheduling Class implementation in the
Linux kernel contained a type confusion vulnerability in some situations. A
local attacker could use this to cause a denial of service (system crash).
(CVE-2023-1077)
It was discovered that the ASUS HID driver in the Linux kernel did not
properly handle device removal, leading to a use-after-free vulnerability.
A local attacker with physical access could plug in a specially crafted USB
device to cause a denial of service (system crash). (CVE-2023-1079)
It was discovered that the Xircom PCMCIA network device driver in the Linux
kernel did not properly handle device removal events. A physically
proximate attacker could use this to cause a denial of service (system
crash). (CVE-2023-1670)
It was discovered that a race condition existed in the Xen transport layer
implementation for the 9P file system protocol in the Linux kernel, leading
to a use-after-free vulnerability. A local attacker could use this to cause
a denial of service (guest crash) or expose sensitive information (guest
kernel memory). (CVE-2023-1859)
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)
It was discovered that the BigBen Interactive Kids' gamepad driver in the
Linux kernel did not properly handle device removal, leading to a use-
after-free vulnerability. A local attacker with physical access could plug
in a specially crafted USB device to cause a denial of service (system
crash). (CVE-2023-25012)
It was discovered that a use-after-free vulnerability existed in the HFS+
file system implementation in the Linux kernel. A local attacker could
possibly use this to cause a denial of service (system crash).
(CVE-2023-2985)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
-
linux-image-ibm
-
5.4.0.1051.77
-
linux-image-5.4.0-1107-gcp
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5.4.0-1107.116
-
linux-image-gkeop
-
5.4.0.1071.69
-
linux-image-raspi2
-
5.4.0.1088.118
-
linux-image-5.4.0-1110-azure
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5.4.0-1110.116
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linux-image-5.4.0-1088-raspi
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5.4.0-1088.99
-
linux-image-5.4.0-1104-aws
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5.4.0-1104.112
-
linux-image-5.4.0-1065-bluefield
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5.4.0-1065.71
-
linux-image-5.4.0-1102-gke
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5.4.0-1102.109
-
linux-image-ibm-lts-20.04
-
5.4.0.1051.77
-
linux-image-azure-lts-20.04
-
5.4.0.1110.103
-
linux-image-gkeop-5.4
-
5.4.0.1071.69
-
linux-image-gcp-lts-20.04
-
5.4.0.1107.109
-
linux-image-bluefield
-
5.4.0.1065.60
-
linux-image-aws-lts-20.04
-
5.4.0.1104.101
-
linux-image-5.4.0-1071-gkeop
-
5.4.0-1071.75
-
linux-image-5.4.0-1093-kvm
-
5.4.0-1093.99
-
linux-image-oracle-lts-20.04
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5.4.0.1103.96
-
linux-image-5.4.0-1103-oracle
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5.4.0-1103.112
-
linux-image-5.4.0-1051-ibm
-
5.4.0-1051.56
-
linux-image-raspi
-
5.4.0.1088.118
-
linux-image-gke-5.4
-
5.4.0.1102.107
-
linux-image-gke
-
5.4.0.1102.107
-
linux-image-kvm
-
5.4.0.1093.88
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.