Description
Double free vulnerability in GnuTLS before 3.3.17 and 3.4.x before 3.4.4 allows remote attackers to cause a denial of service via a long DistinguishedName (DN) entry in a certificate.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | gnutls28 | 3.3.17-1 | — |
| Debian 13 | gnutls28 | 3.3.17-1 | — |
| Debian 12 | gnutls28 | 3.3.17-1 | — |
| Debian 8 | gnutls28 | 3.3.8-6+deb8u2 | DSA-3334-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gnutls28 | 3.3.15-5ubuntu2 | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 | gnutls | 3.2.15-11.1 | SUSE-SU-2015:1518-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 | gnutls | 3.2.15-11.1 | SUSE-SU-2015:1518-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.4.15-1.1 | openSUSE-SU-2024:10105-1 |
Advisories 4
- WID-SEC-2026-3110 GnuTLS: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 31, 2026
- DSA-3334-1 gnutls28 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2015:1518-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10105-1 gnutls-3.4.15-1.1 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1251902
- openSUSE-SU-2015:1499 vendor-advisory
- 1033226 vdb-entry
- http://www.gnutls.org/security.html#GNUTLS-SA-2015-3
- [oss-security] 20150810 CVE request: GNUTLS-SA-2015-3 double free in certificate DN decoding mailing-list
- 76267 vdb-entry
- FEDORA-2015-13287 vendor-advisory
- https://gitlab.com/gnutls/gnutls/commit/272854367efc130fbd4f1a51840d80c630214e12
- [oss-security] 20150817 Re: CVE request: GNUTLS-SA-2015-3 double free in certificate DN decoding mailing-list
- DSA-3334 vendor-advisory