Ubuntu 20.04, 18.04, 22.04 Critical Advisory: Kernel Issues Resolved

IMPORTANT NOTE: If you are a beta tier user, you may have encountered
a problem where the livepatch client reports a "signature verification
failed" state. This was caused by a file naming issue during packaging. 
The issue has been corrected, so please delete any lock files in 
/var/snap/canonical-livepatch/common/locks/, and then use 
"canonical-livepatch refresh" to download the corrected payload.

The problem can be corrected by updating your kernel livepatch to the
following versions:

Ubuntu 20.04 LTS
    aws - 95.4
    azure - 95.4
    gcp - 95.4
    generic - 95.4
    gke - 95.4
    gkeop - 95.4
    ibm - 95.4
    lowlatency - 95.4

Ubuntu 18.04 LTS
    aws - 95.4
    azure - 95.4
    gcp - 95.4
    generic - 95.4
    gke - 95.4
    gkeop - 95.4
    ibm - 95.4
    lowlatency - 95.4

Ubuntu 22.04 LTS
    aws - 95.4
    azure - 95.4
    gcp - 95.4
    generic - 95.4
    gke - 95.4
    ibm - 95.4
    lowlatency - 95.4

Support Information

Kernels older than the levels listed below do not receive livepatch
updates. If you are running a kernel version earlier than the one listed
below, please upgrade your kernel as soon as possible.

Ubuntu 20.04 LTS
    linux-aws-5.15 - 5.15.0-1000
    linux-aws - 5.4.0-1009
    linux-aws - 5.4.0-1061
    linux-azure-5.15 - 5.15.0-1069
    linux-azure - 5.4.0-1010
    linux-gcp-5.15 - 5.15.0-1000
    linux-gcp - 5.4.0-1009
    linux-gke-5.15 - 5.15.0-1000
    linux-gke - 5.4.0-1033
    linux-gkeop - 5.4.0-1009
    linux-hwe-5.15 - 5.15.0-0
    linux-ibm-5.15 - 5.15.0-1000
    linux-ibm - 5.4.0-1009
    linux-oem - 5.4.0-26
    linux - 5.4.0-26

Ubuntu 18.04 LTS
    linux-aws-5.4 - 5.4.0-1069
    linux-aws - 4.15.0-1054
    linux-aws - 4.15.0-1119
    linux-azure-4.15 - 4.15.0-1115
    linux-azure-5.4 - 5.4.0-1069
    linux-gcp-4.15 - 4.15.0-1121
    linux-gcp-5.4 - 5.4.0-1069
    linux-gke-4.15 - 4.15.0-1076
    linux-gke-5.4 - 5.4.0-1009
    linux-gkeop-5.4 - 5.4.0-1007
    linux-hwe-5.4 - 5.4.0-26
    linux-ibm-5.4 - 5.4.0-1009
    linux-oem - 4.15.0-1063
    linux - 4.15.0-69

Ubuntu 16.04 ESM
    linux-aws-hwe - 4.15.0-1126
    linux-aws - 4.4.0-1098
    linux-aws - 4.4.0-1129
    linux-azure - 4.15.0-1063
    linux-azure - 4.15.0-1078
    linux-azure - 4.15.0-1114
    linux-gcp - 4.15.0-1118
    linux-hwe - 4.15.0-143
    linux-hwe - 4.15.0-69
    linux - 4.4.0-168
    linux - 4.4.0-211

Ubuntu 22.04 LTS
    linux-aws-6.2 - 6.2.0-1000
    linux-aws - 5.15.0-1000
    linux-azure-6.2 - 6.2.0-1000
    linux-azure - 5.15.0-1000
    linux-gcp - 5.15.0-1000
    linux-gcp - 6.2.0-1000
    linux-gke - 5.15.0-1000
    linux-ibm - 5.15.0-1000
    linux - 5.15.0-24
    linux - 5.15.0-25
    linux - 5.15.0-71

Ubuntu 14.04 ESM
    linux-lts-xenial - 4.4.0-168

References

-   CVE-2023-0386
-   CVE-2023-1380
-   CVE-2023-1872
-   CVE-2023-2612
-   CVE-2023-31436
-   CVE-2023-32233
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