Home / mailings [SECURITY] [DSA 6140-1] gnutls28 security update
Posted on 18 February 2026
Debian Security Advisory- -------------------------------------------------------------------------
Debian Security Advisory DSA-6140-1 security@debian.org
https://www.debian.org/security/ Salvatore Bonaccorso
February 18, 2026 https://www.debian.org/security/faq
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Package : gnutls28
CVE ID : CVE-2025-14831
Tim Scheckenbach reported a flaw in GnuTLS, a library implementing the
TLS and SSL protocols. Processing of specially crafted certificates
containing a large number of name constraints may result in denial of
service (resource exhaustion).
For the oldstable distribution (bookworm), this problem has been fixed
in version 3.7.9-2+deb12u6. This update also includes a fix for
CVE-2025-9820.
For the stable distribution (trixie), this problem has been fixed in
version 3.8.9-3+deb13u2.
We recommend that you upgrade your gnutls28 packages.
For the detailed security status of gnutls28 please refer to its
security tracker page at:
https://security-tracker.debian.org/tracker/gnutls28
Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/
Mailing list: debian-security-announce@lists.debian.org
