Linux kernel vulnerabilities<\/p>\n
A security issue affects these releases of Ubuntu and its derivatives:<\/p>\n
– Ubuntu 20.04 LTS
\n– Ubuntu 18.04 LTS
\n– Ubuntu 16.04 ESM
\n– Ubuntu 14.04 ESM<\/p>\n
Summary<\/p>\n
Several security issues were fixed in the kernel.<\/p>\n
Software Description<\/p>\n
– linux – Linux kernel
\n– linux-aws – Linux kernel for Amazon Web Services (AWS) systems
\n– linux-azure – Linux kernel for Microsoft Azure Cloud systems
\n– linux-gcp – Linux kernel for Google Cloud Platform (GCP) systems
\n– linux-gke – Linux kernel for Google Container Engine (GKE) systems
\n– linux-gkeop – Linux kernel for Google Container Engine (GKE) systems
\n– linux-ibm – Linux kernel for IBM cloud systems
\n– linux-oem – Linux kernel for OEM systems<\/p>\n
Details<\/p>\n
Yiqi Sun and Kevin Wang discovered that the cgroups implementation in
\nthe Linux kernel did not properly restrict access to the cgroups v1
\nrelease_agent feature. A local attacker could use this to gain
\nadministrative privileges. (CVE-2022-0492)<\/p>\n
Nick Gregory discovered that the Linux kernel incorrectly handled
\nnetwork offload functionality. A local attacker could use this to cause
\na denial of service or possibly execute arbitrary code. (CVE-2022-25636)<\/p>\n
Update instructions<\/p>\n
The problem can be corrected by updating your kernel livepatch to the
\nfollowing versions:<\/p>\n
Ubuntu 20.04 LTS
\naws – 85.1
\nazure – 85.1
\ngcp – 85.1
\ngeneric – 85.1
\ngke – 85.1
\ngkeop – 85.1
\nibm – 85.1
\nlowlatency – 85.1<\/p>\n
Ubuntu 18.04 LTS
\naws – 85.1
\nazure – 85.1
\ngeneric – 85.1
\ngeneric – 85.2
\ngke – 85.1
\ngkeop – 85.1
\nibm – 85.1
\nlowlatency – 85.1
\nlowlatency – 85.2
\noem – 85.1<\/p>\n
Ubuntu 16.04 ESM
\naws – 85.1
\nazure – 85.1
\ngeneric – 85.1
\nlowlatency – 85.1<\/p>\n
Ubuntu 14.04 ESM
\ngeneric – 85.1
\nlowlatency – 85.1<\/p>\n
Support Information<\/p>\n
Kernels older than the levels listed below do not receive livepatch
\nupdates. If you are running a kernel version earlier than the one listed
\nbelow, please upgrade your kernel as soon as possible.<\/p>\n
Ubuntu 20.04 LTS
\nlinux-aws – 5.4.0-1009
\nlinux-azure – 5.4.0-1010
\nlinux-gcp – 5.4.0-1009
\nlinux-gke – 5.4.0-1033
\nlinux-gkeop – 5.4.0-1009
\nlinux-ibm – 5.4.0-1009
\nlinux-oem – 5.4.0-26
\nlinux – 5.4.0-26<\/p>\n
Ubuntu 18.04 LTS
\nlinux-aws – 4.15.0-1054
\nlinux-azure-4.15 – 4.15.0-1115
\nlinux-azure-5.4 – 5.4.0-1069
\nlinux-gke-4.15 – 4.15.0-1076
\nlinux-gke-5.4 – 5.4.0-1009
\nlinux-gkeop-5.4 – 5.4.0-1007
\nlinux-hwe-5.4 – 5.4.0-26
\nlinux-ibm-5.4 – 5.4.0-1009
\nlinux-oem – 4.15.0-1063
\nlinux – 4.15.0-69<\/p>\n
Ubuntu 16.04 ESM
\nlinux-aws – 4.4.0-1098
\nlinux-azure – 4.15.0-1063
\nlinux-hwe – 4.15.0-69
\nlinux – 4.4.0-168<\/p>\n
Ubuntu 14.04 ESM
\nlinux-lts-xenial – 4.4.0-168<\/p>\n
References<\/p>\n
– CVE-2022-0492
\n– CVE-2022-25636<\/p>\n","protected":false},"excerpt":{"rendered":"
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