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Mageia 10 9 libidn Critical Out-Of-Bounds Read CVE-2026-57053

mageia
Calendar Grey July 18, 2026
Scroller Mageia
Security update for Mageia addressing out-of-bounds reads in libidn. Prompt action recommended to mitigate risks.
Security update

Summary

Description: GNU libidn before 1.44 is prone to out-of-bounds reads of uninitialized memory in the ToUnicode APIs because of mishandling in idna_to_unicode_internal. The affected code is not present in libidn2. (CVE-2026-57053)

References

- https://bugs.mageia.org/show_bug.cgi?id=35726

- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2026&m=slackware-security.355846

- https://lists.gnu.org/archive/html/help-libidn/2026-05/msg00000.html

- https://lists.gnu.org/archive/html/help-libidn/2025-06/msg00000.html

- https://ubuntu.com/security/notices/USN-8521-1

- https://www.cve.org/CVERecord?id=CVE-2026-57053

Topics%20covered

Topics Covered

security advisory important memory issue libidn Mageia out-of-bounds reads

Resolution

SRPMS

- 10/core/libidn-1.43-2.1.mga10

- 9/core/libidn-1.41-2.1.mga9

Severity
important
Lowest
Low
Medium
High
Critical

Publication date: 18 Jul 2026
URL: https://advisories.mageia.org/MGASA-2026-0262.html
Type: security
CVE: CVE-2026-57053

Topics%20covered

Topics Covered

security advisory important memory issue libidn Mageia out-of-bounds reads

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