USN-5003-1: Linux kernel vulnerabilities
23 June 2021
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-hwe - Linux kernel for Amazon Web Services (AWS-HWE) systems
- linux-azure - Linux kernel for Microsoft Azure Cloud systems
- linux-azure-4.15 - Linux kernel for Microsoft Azure Cloud systems
- linux-dell300x - Linux kernel for Dell 300x platforms
- linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems
- linux-gcp-4.15 - Linux kernel for Google Cloud Platform (GCP) systems
- linux-hwe - Linux hardware enablement (HWE) kernel
- linux-oracle - Linux kernel for Oracle Cloud systems
- linux-raspi2 - Linux kernel for Raspberry Pi (V8) systems
- linux-snapdragon - Linux kernel for Qualcomm Snapdragon processors
Details
Norbert Slusarek discovered a race condition in the CAN BCM networking
protocol of the Linux kernel leading to multiple use-after-free
vulnerabilities. A local attacker could use this issue to execute arbitrary
code. (CVE-2021-3609)
It was discovered that the eBPF implementation in the Linux kernel did not
properly track bounds information for 32 bit registers when performing div
and mod operations. A local attacker could use this to possibly execute
arbitrary code. (CVE-2021-3600)
Or Cohen discovered that the SCTP implementation in the Linux kernel
contained a race condition in some situations, leading to a use-after-free
condition. A local attacker could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2021-23133)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 18.04
-
linux-image-4.15.0-1022-dell300x
-
4.15.0-1022.26
-
linux-image-4.15.0-1075-oracle
-
4.15.0-1075.83
-
linux-image-4.15.0-1089-raspi2
-
4.15.0-1089.94
-
linux-image-4.15.0-1103-gcp
-
4.15.0-1103.116
-
linux-image-4.15.0-1106-aws
-
4.15.0-1106.113
-
linux-image-4.15.0-1106-snapdragon
-
4.15.0-1106.115
-
linux-image-4.15.0-1118-azure
-
4.15.0-1118.131
-
linux-image-4.15.0-147-generic
-
4.15.0-147.151
-
linux-image-4.15.0-147-generic-lpae
-
4.15.0-147.151
-
linux-image-4.15.0-147-lowlatency
-
4.15.0-147.151
-
linux-image-aws-lts-18.04
-
4.15.0.1106.109
-
linux-image-azure-lts-18.04
-
4.15.0.1118.91
-
linux-image-dell300x
-
4.15.0.1022.24
-
linux-image-gcp-lts-18.04
-
4.15.0.1103.121
-
linux-image-generic
-
4.15.0.147.134
-
linux-image-generic-lpae
-
4.15.0.147.134
-
linux-image-lowlatency
-
4.15.0.147.134
-
linux-image-oracle-lts-18.04
-
4.15.0.1075.85
-
linux-image-raspi2
-
4.15.0.1089.86
-
linux-image-snapdragon
-
4.15.0.1106.109
-
linux-image-virtual
-
4.15.0.147.134
Ubuntu 16.04
-
linux-image-4.15.0-1075-oracle
-
4.15.0-1075.83~16.04.1
Available with Ubuntu Pro
-
linux-image-4.15.0-1103-gcp
-
4.15.0-1103.116~16.04.1
Available with Ubuntu Pro
-
linux-image-4.15.0-1106-aws
-
4.15.0-1106.113~16.04.1
Available with Ubuntu Pro
-
linux-image-4.15.0-1118-azure
-
4.15.0-1118.131~16.04.1
Available with Ubuntu Pro
-
linux-image-4.15.0-147-generic
-
4.15.0-147.151~16.04.1
Available with Ubuntu Pro
-
linux-image-4.15.0-147-lowlatency
-
4.15.0-147.151~16.04.1
Available with Ubuntu Pro
-
linux-image-aws-hwe
-
4.15.0.1106.97
Available with Ubuntu Pro
-
linux-image-azure
-
4.15.0.1118.109
Available with Ubuntu Pro
-
linux-image-gcp
-
4.15.0.1103.104
Available with Ubuntu Pro
-
linux-image-generic-hwe-16.04
-
4.15.0.147.143
Available with Ubuntu Pro
-
linux-image-gke
-
4.15.0.1103.104
Available with Ubuntu Pro
-
linux-image-lowlatency-hwe-16.04
-
4.15.0.147.143
Available with Ubuntu Pro
-
linux-image-oem
-
4.15.0.147.143
Available with Ubuntu Pro
-
linux-image-oracle
-
4.15.0.1075.63
Available with Ubuntu Pro
-
linux-image-virtual-hwe-16.04
-
4.15.0.147.143
Available with Ubuntu Pro
Ubuntu 14.04
-
linux-image-4.15.0-1118-azure
-
4.15.0-1118.131~14.04.1
Available with Ubuntu Pro
-
linux-image-azure
-
4.15.0.1118.91
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.
References
Related notices
- USN-4997-1: linux-image-gke, linux-image-oracle, linux-azure, linux-image-virtual, linux-image-lowlatency-hwe-20.04-edge, linux-image-raspi-nolpae, linux-image-lowlatency, linux-image-lowlatency-hwe-20.04, linux-image-generic-64k-hwe-20.04, linux-image-5.11.0-22-generic-64k, linux-image-azure, linux-aws, linux-image-5.11.0-1012-raspi-nolpae, linux-image-5.11.0-1009-azure, linux-oracle, linux-image-generic-64k, linux-image-raspi, linux-image-5.11.0-1011-gcp, linux-image-5.11.0-22-lowlatency, linux-image-generic-64k-hwe-20.04-edge, linux-image-generic-hwe-20.04, linux-image-5.11.0-1010-oracle, linux-image-generic-lpae-hwe-20.04, linux-image-gcp, linux-image-oem-20.04, linux-image-generic-hwe-20.04-edge, linux-image-5.11.0-22-generic, linux-image-5.11.0-1012-raspi, linux-raspi, linux-image-aws, linux-gcp, linux, linux-image-5.11.0-1011-aws, linux-image-virtual-hwe-20.04-edge, linux-image-generic-lpae-hwe-20.04-edge, linux-image-virtual-hwe-20.04, linux-image-generic, linux-image-generic-lpae, linux-image-5.11.0-22-generic-lpae
- USN-4999-1: linux-image-gke, linux-image-oracle, linux-hwe-5.8, linux-azure, linux-aws-5.8, linux-image-5.8.0-1033-oracle, linux-image-virtual, linux-image-lowlatency-hwe-20.04-edge, linux-image-raspi-nolpae, linux-image-oracle-edge, linux-image-lowlatency, linux-image-lowlatency-hwe-20.04, linux-image-generic-64k-hwe-20.04, linux-image-azure, linux-aws, linux-oracle, linux-image-gcp-edge, linux-image-generic-64k, linux-image-5.8.0-59-generic-lpae, linux-image-raspi, linux-image-5.8.0-59-generic, linux-image-5.8.0-1038-aws, linux-image-generic-64k-hwe-20.04-edge, linux-image-generic-hwe-20.04, linux-image-5.8.0-59-generic-64k, linux-image-5.8.0-1030-kvm, linux-image-generic-lpae-hwe-20.04, linux-image-azure-edge, linux-image-gcp, linux-kvm, linux-azure-5.8, linux-image-oem-20.04, linux-image-kvm, linux-image-generic-hwe-20.04-edge, linux-gcp-5.8, linux-image-5.8.0-1029-raspi-nolpae, linux-raspi, linux-image-5.8.0-1029-raspi, linux-image-aws, linux-oracle-5.8, linux-gcp, linux, linux-image-virtual-hwe-20.04-edge, linux-image-generic-lpae-hwe-20.04-edge, linux-image-virtual-hwe-20.04, linux-image-generic, linux-image-5.8.0-1036-azure, linux-image-5.8.0-59-lowlatency, linux-image-generic-lpae, linux-image-5.8.0-1035-gcp
- USN-5000-1: linux-image-gcp-lts-20.04, linux-image-5.4.0-1046-gcp, linux-raspi-5.4, linux-image-gke, linux-image-oracle, linux-oracle-5.4, linux-image-lowlatency-hwe-18.04, linux-azure, linux-gkeop-5.4, linux-image-5.4.0-1038-raspi, linux-image-gkeop-5.4, linux-image-virtual, linux-image-gke-5.4, linux-image-oracle-edge, linux-image-lowlatency, linux-image-oem, linux-image-5.4.0-77-generic-lpae, linux-image-azure, linux-aws, linux-image-5.4.0-77-generic, linux-hwe-5.4, linux-image-aws-edge, linux-oracle, linux-image-aws-lts-20.04, linux-image-gcp-edge, linux-image-oem-osp1, linux-image-raspi, linux-image-raspi-hwe-18.04-edge, linux-aws-5.4, linux-image-virtual-hwe-18.04-edge, linux-image-azure-edge, linux-image-gcp, linux-image-raspi2-hwe-18.04, linux-image-5.4.0-1048-oracle, linux-image-gkeop, linux-image-5.4.0-1051-aws, linux-gkeop, linux-image-raspi-hwe-18.04, linux-gcp-5.4, linux-gke-5.4, linux-image-oracle-lts-20.04, linux-image-generic-hwe-18.04-edge, linux-image-generic-lpae-hwe-18.04-edge, linux-image-azure-lts-20.04, linux-image-snapdragon-hwe-18.04-edge, linux-raspi, linux-image-raspi2-hwe-18.04-edge, linux-image-aws, linux-gcp, linux, linux-image-virtual-hwe-18.04, linux-image-raspi2, linux-image-lowlatency-hwe-18.04-edge, linux-image-5.4.0-1018-gkeop, linux-image-snapdragon-hwe-18.04, linux-image-generic, linux-image-generic-hwe-18.04, linux-azure-5.4, linux-image-5.4.0-1051-azure, linux-image-generic-lpae-hwe-18.04, linux-image-generic-lpae, linux-image-5.4.0-1046-gke, linux-gke, linux-image-5.4.0-77-lowlatency
- USN-5001-1: linux-oem-5.10, linux-image-oem-20.04b, linux-image-oem-20.04-edge, linux-image-oem-20.04, linux-image-5.10.0-1033-oem
- USN-5000-2: linux-kvm-tools-5.4.0-1041, linux-kvm, linux-tools-5.4.0-1041-kvm, linux-headers-kvm, linux-image-unsigned-5.4.0-1041-kvm, linux-headers-5.4.0-1041-kvm, linux-image-kvm, linux-modules-5.4.0-1041-kvm, linux-buildinfo-5.4.0-1041-kvm, linux-tools-kvm, linux-kvm-headers-5.4.0-1041, linux-image-5.4.0-1041-kvm
- USN-4997-2: linux-kvm, linux-image-unsigned-5.11.0-1009-kvm, linux-buildinfo-5.11.0-1009-kvm, linux-kvm-tools-5.11.0-1009, linux-headers-5.11.0-1009-kvm, linux-tools-kvm, linux-headers-kvm, linux-modules-5.11.0-1009-kvm, linux-image-kvm, linux-tools-5.11.0-1009-kvm, linux-kvm-headers-5.11.0-1009, linux-image-5.11.0-1009-kvm
- USN-5002-1: linux-image-raspi2-hwe-18.04, linux-image-gkeop-5.3, linux-hwe, linux-raspi2-5.3, linux-image-5.3.0-1041-raspi2, linux-image-5.3.0-75-lowlatency, linux-gke-5.3, linux-image-5.3.0-1044-gke, linux-image-5.3.0-75-generic, linux-image-gke-5.3
- LSN-0078-1: gke, gkeop, lowlatency-4.15, gke-5.4, gke-4.15, gcp, oem, lowlatency-5.4, gkeop-5.4, generic-5.4, generic-4.15
- USN-5082-1: linux-tools-5.13.0-1012-oem, linux-buildinfo-5.13.0-1012-oem, linux-oem-20.04c, linux-tools-oem-20.04c, linux-modules-5.13.0-1012-oem, linux-oem-5.13, linux-image-5.13.0-1012-oem, linux-oem-5.13-headers-5.13.0-1012, linux-image-oem-20.04c, linux-headers-oem-20.04c, linux-image-unsigned-5.13.0-1012-oem, linux-headers-5.13.0-1012-oem, linux-oem-5.13-tools-5.13.0-1012, linux-oem-5.13-tools-host
- USN-5505-1: linux-headers-4.4.0-229-lowlatency, linux-image-extra-virtual-lts-xenial, linux-lowlatency-lts-xenial, linux-tools-4.4.0-1110-kvm, linux-modules-4.4.0-1110-kvm, linux-image-virtual-lts-xenial, linux-buildinfo-4.4.0-229-generic, linux-headers-generic-lts-xenial, linux-tools-4.4.0-229-generic, linux-kvm-headers-4.4.0-1110, linux-tools-lowlatency-lts-xenial, linux-cloud-tools-lowlatency-lts-xenial, linux-signed-generic-lts-xenial, linux-image-unsigned-4.4.0-229-generic, linux-headers-kvm, linux-tools-virtual-lts-xenial, linux-lts-xenial-tools-4.4.0-229, linux-headers-4.4.0-229-generic, linux-buildinfo-4.4.0-229-lowlatency, linux-kvm-cloud-tools-4.4.0-1110, linux-tools-generic-lts-xenial, linux-cloud-tools-generic-lts-xenial, linux-headers-4.4.0-229, linux-image-4.4.0-229-lowlatency, linux-kvm, linux-signed-image-lowlatency-lts-xenial, linux-cloud-tools-4.4.0-229-lowlatency, linux-image-lowlatency-lts-xenial, linux-cloud-tools-virtual-lts-xenial, linux-kvm-tools-4.4.0-1110, linux-lts-xenial-cloud-tools-4.4.0-229, linux-image-4.4.0-229-generic, linux-image-kvm, linux-modules-extra-4.4.0-229-generic, linux-signed-lowlatency-lts-xenial, linux-cloud-tools-4.4.0-229-generic, linux-cloud-tools-4.4.0-1110-kvm, linux-tools-kvm, linux-lts-xenial, linux-image-unsigned-4.4.0-229-lowlatency, linux-image-generic-lts-xenial, linux-generic-lts-xenial, linux-modules-4.4.0-229-lowlatency, linux-signed-image-generic-lts-xenial, linux-virtual-lts-xenial, linux-tools-4.4.0-229-lowlatency, linux-headers-lowlatency-lts-xenial, linux-headers-virtual-lts-xenial, linux-buildinfo-4.4.0-1110-kvm, linux-modules-4.4.0-229-generic, linux-image-4.4.0-1110-kvm, linux-headers-4.4.0-1110-kvm
- USN-5513-1: linux-aws-tools-4.4.0-1109, linux-image-aws, linux-aws-headers-4.4.0-1109, linux-headers-aws, linux-cloud-tools-4.4.0-1109-aws, linux-image-4.4.0-1109-aws, linux-tools-aws, linux-modules-4.4.0-1109-aws, linux-aws-cloud-tools-4.4.0-1109, linux-headers-4.4.0-1109-aws, linux-tools-4.4.0-1109-aws, linux-aws, linux-buildinfo-4.4.0-1109-aws
- LSN-0079-1: gke, gkeop, lowlatency-4.15, gke-5.4, lowlatency-4.4, gke-4.15, gcp, oem, lowlatency-5.4, gkeop-5.4, generic-5.4, generic-4.4, generic-4.15