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Mageia 10 x11-server Important Heap Overflow Use-After-Free Fix 2026-0303

mageia
Calendar Grey July 27, 2026
Scroller Mageia
Security update addressing crucial vulnerabilities in Mageia x11-server and tigervnc for enhanced protection.
Mageia has released updated packages for version 10 to address security issues, specifically a heap buffer overflow and a use-after-free vulnerability in the graphics components.

Summary

Description: The updated packages fix security vulnerabilities: glamor Font Atlas Heap Buffer Overflow. (CVE-2026-55999) GLX contextTags Use-After-Free in CommonMakeCurrent(). (CVE-2026-56000)

References

- https://bugs.mageia.org/show_bug.cgi?id=35860

- https://www.openwall.com/lists/oss-security/2026/07/08/2

- https://www.cve.org/CVERecord?id=CVE-2026-55999

- https://www.cve.org/CVERecord?id=CVE-2026-56000

Topics%20covered

Topics Covered

security advisory heap overflow use-after-free tigervnc Mageia x11-server

Resolution

SRPMS

- 10/core/x11-server-21.1.24-1.mga10

- 10/core/x11-server-xwayland-24.1.13-1.mga10

- 10/core/tigervnc-1.15.0-7.1.mga10

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 27 Jul 2026
URL: https://advisories.mageia.org/MGASA-2026-0303.html
Type: security
CVE: CVE-2026-55999, CVE-2026-56000

Topics%20covered

Topics Covered

security advisory heap overflow use-after-free tigervnc Mageia x11-server

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