Linux kernel vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 22.04 LTS
Summary
Several security issues were fixed in the 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-gke - Linux kernel for Google Container Engine (GKE) systems
- linux-ibm - Linux kernel for IBM cloud systems
Details
Lonial Con discovered that the netfilter subsystem in the Linux kernel
contained a memory leak when handling certain element flush operations. A
local attacker could use this to expose sensitive information (kernel
memory). (CVE-2023-4569)
Xingyuan Mo discovered that the netfilter subsystem in the Linux kernel did
not properly handle inactive elements in its PIPAPO data structure, 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-2023-6817)
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)
Kevin Rich discovered that the netfilter subsystem in the Linux kernel did
not properly check deactivated elements in certain situations, 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-2024-0193)
Lonial Con discovered that the netfilter subsystem in the Linux kernel did
not properly handle element deactivation 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-2024-1085)
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)
In the Linux kernel, the following vulnerability has been resolved:
net: qualcomm: rmnet: fix global oob in rmnet_policy The variable
rmnet_link_ops assign a bigger maxtype which leads to a global out-of-
bounds read when parsing the netlink attributes. (CVE-2024-26597)
Update instructions
The problem can be corrected by updating your kernel livepatch to the following
versions:
Ubuntu 20.04 LTS
- aws - 103.1
- aws - 103.2
- aws - 103.3
- azure - 103.3
- gcp - 103.2
- gcp - 103.3
- generic - 103.1
- generic - 103.2
- generic - 103.3
- gke - 103.3
- ibm - 103.2
- lowlatency - 103.1
- lowlatency - 103.2
- lowlatency - 103.3
Ubuntu 18.04 LTS
- aws - 103.3
- azure - 103.3
- gcp - 103.3
- generic - 103.3
- lowlatency - 103.3
Ubuntu 22.04 LTS
- aws - 103.1
- aws - 103.2
- aws - 103.3
- azure - 103.1
- azure - 103.2
- azure - 103.3
- gcp - 103.1
- gcp - 103.2
- generic - 103.1
- generic - 103.2
- generic - 103.3
- gke - 103.1
- gke - 103.2
- gke - 103.3
- ibm - 103.1
- ibm - 103.2
- ibm - 103.3
Support Information
Livepatches for supported LTS kernels will receive upgrades for
a period of up to 13 months after the build date of the kernel.
Livepatches for supported HWE kernels which are not based on
an LTS kernel version will receive upgrades for a period of
up to 9 months after the build date of the kernel, or until the end
of support for that kernel’s non-LTS distro release version,
whichever is sooner.