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Critical GNU SASL Vulnerability Causes Denial of Service Risk

Critical GNU SASL Vulnerability Causes Denial of Service Risk

First seen 1 Jun 2026, 22:50 UTC • •
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ThreatCluster AI
ThreatCluster •June 2, 2026 at 22:40 UTC
  • •GNU SASL vulnerability affects Ubuntu 26.04 LTS, 25.10, and 24.04 LTS.
  • •Improper handling of DIGEST-MD5 tokens can lead to service crashes.
  • •Users should update to the latest package versions to mitigate the risk.

A vulnerability in GNU SASL has been identified that affects multiple Ubuntu releases, including 26.04 LTS, 25.10, and 24.04 LTS. The issue arises from improper handling of DIGEST-MD5 tokens, which could allow attackers to craft inputs that cause the service to crash, leading to a denial of service. Users are advised to update their systems to the latest package versions to mitigate this risk. The affected packages include gsasl and libgsasl18. A standard system update will apply the necessary changes. The vulnerability has been assigned the identifier USN-8356-1. No active exploitation has been reported at this time, but the potential for denial of service remains a concern.

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Updated 101d ago How this analysis works

Timeline

2026-06-01
USN-8356-1 vulnerability disclosed
A vulnerability in GNU SASL was reported, affecting multiple Ubuntu releases and allowing potential denial of service.
Ubuntu
2026-06-01
Linuxsecurity advisory published
Linuxsecurity published an advisory detailing the GNU SASL vulnerability and its impact on Ubuntu systems.
Linuxsecurity

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