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Ubuntu 22.04 OpenSSH Important Remote Access Issues USN-8222-1

ubuntu
Calendar Grey April 29, 2026
Dist Ubuntu Esm H88
OpenSSH security issues revealed in Ubuntu 22.04 and others. Important fixes against potential remote access exploits are detailed.
Several security issues were fixed in OpenSSH.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 26.04 LTS - Ubuntu 25.10 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS Summary: Several security issues were fixed in OpenSSH. Software Description: - openssh: secure shell (SSH) for secure access to remote machines Details: Christos Papakonstantinou discovered that the OpenSSH scp tool incorrectly handled the legacy scp protocol (-O) option. This could result in certain files being installed setuid or setgid, contrary to expectations. (CVE-2026-35385) Florian Kohnh�user discovered that OpenSSH incorrectly handled shell metacharacters in usernames within a command line. When untrusted usernames and non-default configurations using % in ssh_config are being used, an attacker could possibly use this issue to execute arbitrary code. (CVE-2026-35386) Christos Papakonstantinou discovered that OpenSSH incorrectly handled parsing the PubkeyAcceptedAlgorithms and HostbasedAcceptedAlgorithms options. This coul...

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Topics%20covered

Topics Covered

security advisory remote access Ubuntu important arbitrary code openssh

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 26.04 LTS openssh-client 1:10.2p1-2ubuntu3.2 openssh-server 1:10.2p1-2ubuntu3.2 Ubuntu 25.10 openssh-client 1:10.0p1-5ubuntu5.4 openssh-server 1:10.0p1-5ubuntu5.4 Ubuntu 24.04 LTS openssh-client 1:9.6p1-3ubuntu13.16 openssh-server 1:9.6p1-3ubuntu13.16 Ubuntu 22.04 LTS openssh-client 1:8.9p1-3ubuntu0.15 openssh-server 1:8.9p1-3ubuntu0.15 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8222-1

CVE-2026-35385, CVE-2026-35386, CVE-2026-35387, CVE-2026-35388,

CVE-2026-35414

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8222-1

Topics%20covered

Topics Covered

security advisory remote access Ubuntu important arbitrary code openssh

Package Information

https://launchpad.net/ubuntu/+source/openssh/1:10.2p1-2ubuntu3.2 https://launchpad.net/ubuntu/+source/openssh/1:10.0p1-5ubuntu5.4 https://launchpad.net/ubuntu/+source/openssh/1:9.6p1-3ubuntu13.16 https://launchpad.net/ubuntu/+source/openssh/1:8.9p1-3ubuntu0.15

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