Update - We have delivered KernelCare patches for several distributions. The available patches on the main feed at the moment are:
K20260501_02 (oel8-uek6)
K20260501_10 (rocky9)
K20260430_07 (alma9.6 esu)
K20260430_13 (alma9.2 esu)
Additionally, patches for these distributions are released on the test feed:
oel7-uek6
cl7h
cl8
oel8
centos8
rhel8
alma8
alma9
cl9
rhel9
pve-7-5.15
ubuntu-focal-lts-jammy-aws
ubuntu-focal-lts-jammy
ubuntu-focal-lts-jammy-azure
ubuntu-jammy-aws
ubuntu-jammy
ubuntu-jammy-azure
A key detail for the patches still on the test feed, is that you need to enable said feed while running the update command:
kcarectl --update --prefix test
May 01, 2026 - 16:28 UTC
K20260501_02 (oel8-uek6)
K20260501_10 (rocky9)
K20260430_07 (alma9.6 esu)
K20260430_13 (alma9.2 esu)
Additionally, patches for these distributions are released on the test feed:
oel7-uek6
cl7h
cl8
oel8
centos8
rhel8
alma8
alma9
cl9
rhel9
pve-7-5.15
ubuntu-focal-lts-jammy-aws
ubuntu-focal-lts-jammy
ubuntu-focal-lts-jammy-azure
ubuntu-jammy-aws
ubuntu-jammy
ubuntu-jammy-azure
A key detail for the patches still on the test feed, is that you need to enable said feed while running the update command:
kcarectl --update --prefix test
May 01, 2026 - 16:28 UTC
Update - Patched kernel has been released into testing repo:
for CloudLinux 8 - 4.18.0-553.121.1.lve.el8.x86_64
for CloudLinux 7h - 4.18.0-553.121.1.lve.el7h.x86_64
for CloudLinux 8:
yum update kernel --enablerepo=cloudlinux-updates-testing
for CloudLinux 7h:
yum update kernel --enablerepo=cl7h_beta
May 01, 2026 - 09:09 UTC
for CloudLinux 8 - 4.18.0-553.121.1.lve.el8.x86_64
for CloudLinux 7h - 4.18.0-553.121.1.lve.el7h.x86_64
for CloudLinux 8:
yum update kernel --enablerepo=cloudlinux-updates-testing
for CloudLinux 7h:
yum update kernel --enablerepo=cl7h_beta
May 01, 2026 - 09:09 UTC
Update - We are continuing to work on a fix for this issue.
May 01, 2026 - 09:08 UTC
May 01, 2026 - 09:08 UTC
Identified - Patched kernel has been released into testing repo:
for CloudLinux 8 - 4.18.0-553.121.1.lve.el8.x86_64
for CloudLinux 7h - 4.18.0-553.121.1.lve.el7h.x86_64
yum update kernel --enablerepo=cloudlinux-updates-testing
May 01, 2026 - 09:02 UTC
for CloudLinux 8 - 4.18.0-553.121.1.lve.el8.x86_64
for CloudLinux 7h - 4.18.0-553.121.1.lve.el7h.x86_64
yum update kernel --enablerepo=cloudlinux-updates-testing
May 01, 2026 - 09:02 UTC
Update - We've published a blog post with a lot of up-to-date information on the issue
CVE-2026-31431 (Copy Fail): Mitigation and Upcoming Patches for CloudLinux
Apr 30, 2026 - 16:54 UTC
CVE-2026-31431 (Copy Fail): Mitigation and Upcoming Patches for CloudLinux
Apr 30, 2026 - 16:54 UTC
Update - A temporary workaround has been found
It prevents the algif_aead_init() initialization function from being called during kernel boot.
Please note that applying this workaround requires a reboot!
What needs to be done:
grubby --update-kernel=ALL --args="initcall_blacklist=algif_aead_init"
reboot
Apr 30, 2026 - 16:35 UTC
It prevents the algif_aead_init() initialization function from being called during kernel boot.
Please note that applying this workaround requires a reboot!
What needs to be done:
grubby --update-kernel=ALL --args="initcall_blacklist=algif_aead_init"
reboot
Apr 30, 2026 - 16:35 UTC
Investigating - Copy Fail (CVE-2026-31431) is a Linux kernel bug in the crypto component authencesn. It allows a normal local user to make a very specific 4-byte change to the cached contents of any readable file on the system. In practice, that means a small Python script could tamper a setuid binary and gain root access on most major Linux distros shipped since 2017.
We're investigating the situation and a patch is on its way for CloudLinux kernels and KernelCare.
Apr 29, 2026 - 21:34 UTC
We're investigating the situation and a patch is on its way for CloudLinux kernels and KernelCare.
Apr 29, 2026 - 21:34 UTC
Monitoring - We are making significant changes to the mechanism of accessing CloudLinux repositories.
This release affects Cloudlinux 8, 9 and Ubuntu. CL7 will be handled later. CL10 also receives an update though it already uses no-auth repos.
License validation has been moved within CloudLinux OS itself, so no action is required on the customer side other than updating the packages, which will be discussed below.
The transition on the client servers will be implemented by updating the cloudlinux-release and rhn-client-tools packages; therefore, if these packages are excluded from the update for any reason, please unblock them so you do not lose the ability to receive updates.
The version of the rhn package that will be updated is rhn-client-tools 3.0.3-1; versions of the cloudlinux-release packages depend on the system being used and can be found in our changelog:
CloudLinux 8 release packages
CloudLinux 9 release packages
CloudLinux 10 release packages
For Ubuntu it is - cloudlinux-release 0.1-10
Rollout of the packages will begin on April 30.
ELS repos brough by php-els, python-els, etc packages can be accessed via JWT token.
If you have questions about how access to ALT-ELS repositories works, you can find more details in this article:
alt-PHP, Python, NodeJS, Ruby repositories changes in CloudLinux 10
Important! If, for whatever reason, you are currently unable to update your packages and switch to the new mirrors, you will not be left without updates. There will be a transition period lasting several months during which both the old and new mirror systems will operate simultaneously.
Apr 29, 2026 - 09:19 UTC
This release affects Cloudlinux 8, 9 and Ubuntu. CL7 will be handled later. CL10 also receives an update though it already uses no-auth repos.
License validation has been moved within CloudLinux OS itself, so no action is required on the customer side other than updating the packages, which will be discussed below.
The transition on the client servers will be implemented by updating the cloudlinux-release and rhn-client-tools packages; therefore, if these packages are excluded from the update for any reason, please unblock them so you do not lose the ability to receive updates.
The version of the rhn package that will be updated is rhn-client-tools 3.0.3-1; versions of the cloudlinux-release packages depend on the system being used and can be found in our changelog:
CloudLinux 8 release packages
CloudLinux 9 release packages
CloudLinux 10 release packages
For Ubuntu it is - cloudlinux-release 0.1-10
Rollout of the packages will begin on April 30.
ELS repos brough by php-els, python-els, etc packages can be accessed via JWT token.
If you have questions about how access to ALT-ELS repositories works, you can find more details in this article:
alt-PHP, Python, NodeJS, Ruby repositories changes in CloudLinux 10
Important! If, for whatever reason, you are currently unable to update your packages and switch to the new mirrors, you will not be left without updates. There will be a transition period lasting several months during which both the old and new mirror systems will operate simultaneously.
Apr 29, 2026 - 09:19 UTC
About This Site
Welcome to CloudLinux status page. Here you can see if there are any ongoing issues with the CloudLinux network or other services.
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