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Ubuntu: libssh Moderate Crash Advisory USN-7849-1 CVE-2025-8114

ubuntu
Calendar Grey November 4, 2025
Dist Ubuntu Esm H88
libssh could cause crash vulnerabilities impacting multiple Ubuntu releases. Immediate updates are essential for security.
libssh could be made to crash.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 25.10 - Ubuntu 25.04 - Ubuntu 24.04 LTS - Ubuntu 22.04 LTS - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS - Ubuntu 16.04 LTS Summary: libssh could be made to crash. Software Description: - libssh: A tiny C SSH library Details: Philippe Antoine discovered that libssh did not properly manage memory when calculating a session id during the key exchange process. An attacker could possibly use this issue to cause libssh to crash, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu memory issue libssh

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 25.10 libssh-4 0.11.2-1ubuntu0.1 Ubuntu 25.04 libssh-4 0.11.1-1ubuntu0.2 Ubuntu 24.04 LTS libssh-4 0.10.6-2ubuntu0.2 libssh-gcrypt-4 0.10.6-2ubuntu0.2 Ubuntu 22.04 LTS libssh-4 0.9.6-2ubuntu0.22.04.5 libssh-gcrypt-4 0.9.6-2ubuntu0.22.04.5 Ubuntu 20.04 LTS libssh-4 0.9.3-2ubuntu2.5+esm2 Available with Ubuntu Pro libssh-gcrypt-4 0.9.3-2ubuntu2.5+esm2 Available with Ubuntu Pro Ubuntu 18.04 LTS libssh-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5 Available with Ubuntu Pro libssh-gcrypt-4 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm5 Available with Ubuntu Pro Ubuntu 16.04 LTS libssh-4 0.6.3-4.3ubuntu0.6+esm3 Available with Ubuntu Pro libssh-gcrypt-4 0.6.3-4.3ubuntu0.6+esm3 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-7849-1

CVE-2025-8114

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7849-1

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu memory issue libssh

Package Information

https://launchpad.net/ubuntu/+source/libssh/0.11.2-1ubuntu0.1 https://launchpad.net/ubuntu/+source/libssh/0.11.1-1ubuntu0.2

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