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Ubuntu 26.04 LTS gsasl Important DoS Crash Advisory USN-8356-1

ubuntu
Calendar Grey June 1, 2026
Dist Ubuntu Esm H88
Critical update for GNU SASL on Ubuntu prevents potential crash from crafted input issues.
GNU SASL could be made to crash if it received specially crafted input.

Summary

GNU SASL could be made to crash if it received specially crafted input.

Software Description:

- gsasl: Simple Authentication and Security Layer framework

Details:

It was discovered that GNU SASL did not properly handle certain DIGEST-MD5

tokens. An attacker could possibly use this issue to cause GNU SASL to

crash, resulting in a denial of service.

Topics%20covered

Topics Covered

security advisory denial of service DoS Ubuntu important gsasl

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 26.04 LTS
  gsasl                           2.2.2-4ubuntu1.1
  libgsasl18                      2.2.2-4ubuntu1.1

Ubuntu 25.10
  gsasl                           2.2.2-2ubuntu1.1
  libgsasl18                      2.2.2-2ubuntu1.1

Ubuntu 24.04 LTS
  gsasl                           2.2.1-1willsync1ubuntu0.1
  libgsasl18                      2.2.1-1willsync1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-8356-1

CVE-2026-48829

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-8356-1

Topics%20covered

Topics Covered

security advisory denial of service DoS Ubuntu important gsasl

Package Information

https://launchpad.net/ubuntu/+source/gsasl/2.2.2-4ubuntu1.1
https://launchpad.net/ubuntu/+source/gsasl/2.2.2-2ubuntu1.1
https://launchpad.net/ubuntu/+source/gsasl/2.2.1-1willsync1ubuntu0.1

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