Mageia 9: Fetchmail Critical Protocol Violation Fix MGASA-2025-0238
mageia
October 14, 2025
MGASA-2025-0238 - Updated fetchmail package fixes security vulnerability
Summary
Description:
It was discovered that fetchmail's SMTP client, when configured to
authenticate, is susceptible to a protocol violation where, when a
trusted but malicious or malfunctioning SMTP server responds to an
authentication request with a "334" code but without a following blank
on the line, it will attempt to start reading from memory address 0x1 to
parse the server's SASL challenge. This event will usually cause a crash
of fetchmail (CVE-2025-61962).
References
- https://bugs.mageia.org/show_bug.cgi?id=34644
- https://www.openwall.com/lists/oss-security/2025/10/03/2
- https://www.openwall.com/lists/oss-security/2025/10/04/3
- https://www.cve.org/CVERecord?id=CVE-2025-61962
Topics Covered
Resolution
SRPMS
- 9/core/fetchmail-6.5.6-1.mga9
PREVIOUS
NEXT
Severity
critical
Lowest
Low
Medium
High
Critical
Publication date: 14 Oct 2025
URL: https://advisories.mageia.org/MGASA-2025-0238.html
Type: security
CVE: CVE-2025-61962
Topics Covered
Get the latest News and Insights
Get the latest Linux and open source security news straight to your inbox.
Related News
Powered By
Linux Security - Your source for Top Linux News, Advisories, HOWTOs and Feature Releases
QUICK LINKS
subscribe to newsletters!
Like staying secure? So do we.
Sign up for updates, tips, and alerts!