USN-5267-2: Linux kernel regression
11 February 2022
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-aws-5.4 - Linux kernel for Amazon Web Services (AWS) systems
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
- linux-azure-5.4 - Linux kernel for Microsoft Azure cloud systems
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-5.4 - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gke - Linux kernel for Google Container Engine (GKE) systems
- linux-gke-5.4 - Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop - Linux kernel for Google Container Engine (GKE) systems
- linux-gkeop-5.4 - Linux kernel for Google Container Engine (GKE) systems
- linux-hwe-5.4 - Linux hardware enablement (HWE) kernel
- linux-ibm - Linux kernel for IBM cloud systems
- linux-kvm - Linux kernel for cloud environments
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-oracle-5.4 - Linux kernel for Oracle Cloud systems
Details
USN-5267-1 fixed vulnerabilities in the Linux kernel. Unfortunately,
that update introduced a regression that caused the kernel to freeze
when accessing CIFS shares in some situations. This update fixes
the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the Bluetooth subsystem in the Linux kernel
contained 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-2021-3640)
Likang Luo 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-2021-3752)
Luo Likang discovered that the FireDTV Firewire driver in the Linux kernel
did not properly perform bounds checking in some situations. A local
attacker could use this to cause a denial of service (system crash) or
possibly execute arbitrary code. (CVE-2021-42739)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 20.04
-
linux-image-5.4.0-99-lowlatency
-
5.4.0-99.112
-
linux-image-gkeop
-
5.4.0.1033.36
-
linux-image-virtual
-
5.4.0.99.103
-
linux-image-5.4.0-99-generic
-
5.4.0-99.112
-
linux-image-generic
-
5.4.0.99.103
-
linux-image-oem
-
5.4.0.99.103
-
linux-image-5.4.0-1033-gkeop
-
5.4.0-1033.34
-
linux-image-5.4.0-1055-kvm
-
5.4.0-1055.57
-
linux-image-5.4.0-1065-aws
-
5.4.0-1065.68
-
linux-image-ibm
-
5.4.0.1014.15
-
linux-image-5.4.0-1063-oracle
-
5.4.0-1063.67
-
linux-image-oem-osp1
-
5.4.0.99.103
-
linux-image-gke-5.4
-
5.4.0.1062.72
-
linux-image-5.4.0-1062-gke
-
5.4.0-1062.65
-
linux-image-5.4.0-1014-ibm
-
5.4.0-1014.15
-
linux-image-5.4.0-1069-azure
-
5.4.0-1069.72
-
linux-image-5.4.0-99-generic-lpae
-
5.4.0-99.112
-
linux-image-azure-lts-20.04
-
5.4.0.1069.67
-
linux-image-gkeop-5.4
-
5.4.0.1033.36
-
linux-image-gcp-lts-20.04
-
5.4.0.1064.74
-
linux-image-ibm-lts-20.04
-
5.4.0.1014.15
-
linux-image-aws-lts-20.04
-
5.4.0.1065.67
-
linux-image-5.4.0-1064-gcp
-
5.4.0-1064.68
-
linux-image-generic-lpae
-
5.4.0.99.103
-
linux-image-gke
-
5.4.0.1062.72
-
linux-image-oracle-lts-20.04
-
5.4.0.1063.63
-
linux-image-kvm
-
5.4.0.1055.54
-
linux-image-lowlatency
-
5.4.0.99.103
Ubuntu 18.04
-
linux-image-generic-hwe-18.04
-
5.4.0.99.112~18.04.86
-
linux-image-5.4.0-99-generic
-
5.4.0-99.112~18.04.1
-
linux-image-oem
-
5.4.0.99.112~18.04.86
-
linux-image-5.4.0-1033-gkeop
-
5.4.0-1033.34~18.04.1
-
linux-image-aws
-
5.4.0.1065.47
-
linux-image-5.4.0-1063-oracle
-
5.4.0-1063.67~18.04.1
-
linux-image-oem-osp1
-
5.4.0.99.112~18.04.86
-
linux-image-5.4.0-1062-gke
-
5.4.0-1062.65~18.04.1
-
linux-image-generic-lpae-hwe-18.04
-
5.4.0.99.112~18.04.86
-
linux-image-5.4.0-99-generic-lpae
-
5.4.0-99.112~18.04.1
-
linux-image-snapdragon-hwe-18.04
-
5.4.0.99.112~18.04.86
-
linux-image-gkeop-5.4
-
5.4.0.1033.34~18.04.33
-
linux-image-azure
-
5.4.0.1069.48
-
linux-image-virtual-hwe-18.04
-
5.4.0.99.112~18.04.86
-
linux-image-5.4.0-1064-gcp
-
5.4.0-1064.68~18.04.1
-
linux-image-gcp
-
5.4.0.1064.49
-
linux-image-5.4.0-1069-azure
-
5.4.0-1069.72~18.04.1
-
linux-image-oracle
-
5.4.0.1063.67~18.04.42
-
linux-image-5.4.0-99-lowlatency
-
5.4.0-99.112~18.04.1
-
linux-image-lowlatency-hwe-18.04
-
5.4.0.99.112~18.04.86
-
linux-image-gke-5.4
-
5.4.0.1062.65~18.04.26
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.