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Mageia socat Critical Heap Buffer Overflow Vuln 2026-0290

mageia
Calendar Grey July 23, 2026
Scroller Mageia
A critical update fixes a heap buffer overflow vulnerability in socat affecting Mageia 9 and 10.
Mageia released an update on July 23, 2026, addressing a heap buffer overflow vulnerability in the SOCKS5 reply parser, impacting releases 10 and 9.

Summary

Description: The updated package fixes a security vulnerability: Heap Buffer Overflow via SOCKS5 Reply Parser. (CVE-2026-56123)

References

- https://bugs.mageia.org/show_bug.cgi?id=35794

- https://lists.opensuse.org/archives/list/security-announce@lists.opensuse.org/message/F6FLUO6FYZ6TSE43PLY7QJGUX4N2JXWW/

- https://ubuntu.com/security/notices/USN-8511-1

- https://www.cve.org/CVERecord?id=CVE-2026-56123

Topics%20covered

Topics Covered

security advisory remote access important heap buffer overflow socat Mageia

Resolution

SRPMS

- 10/core/socat-1.8.1.0-1.1.mga10

- 9/core/socat-1.8.0.2-1.1.mga9

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 23 Jul 2026
URL: https://advisories.mageia.org/MGASA-2026-0290.html
Type: security
CVE: CVE-2026-56123

Topics%20covered

Topics Covered

security advisory remote access important heap buffer overflow socat Mageia

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