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fkie_cve-2026-57053

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.

GHSA-xpv7-vm32-p7wv

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.

OESA-2026-2932 — libidn security update

Affected: openEuler:24.03-LTS-SP1: libidn

GNU Libidn is a fully documented implementation of the Stringprep, Punycode and IDNA 2003 specifications. Libidn&apos;s purpose is to encode and decode internationalized domain names. Security Fix(es):

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)

openSUSE-SU-2026:21758-1 — Security update for libidn

Security update for libidn

RHSA-2026:42125 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

libidn: GNU libidn: Out-of-bounds read in ToUnicode APIs

SUSE-SU-2026:23621-1 — Security update for libidn

Security update for libidn

UBUNTU-CVE-2026-57053

Affected: Ubuntu:14.04:LTS: libidn, Ubuntu:16.04:LTS: libidn, Ubuntu:18.04:LTS: libidn, Ubuntu:20.04:LTS: libidn, Ubuntu:22.04:LTS: libidn, Ubuntu:24.04:LTS: libidn, Ubuntu:25.10: libidn, Ubuntu:26.04:LTS: libidn

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.