Debian 11: Important Fix for libsodium's Critical EC Issue DLA-4435-1
debian lts
January 7, 2026
It was discovered that the crypto_core_ed25519_is_valid_point() function of the Sodium cryptography library mishandled checks for valid elliptic curve points
Topics Covered
Summary
For Debian 11 bullseye, this problem has been fixed in version
1.0.18-1+deb11u1.
We recommend that you upgrade your libsodium packages.
For the detailed security status of libsodium please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/libsodium
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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Severity
critical
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Critical
Package: libsodium
Version: 1.0.18-1+deb11u1
CVE ID: CVE-2025-69277
Debian Bug: 1124374
Topics Covered
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