Description
GnuTLS before 2017-02-20 has an out-of-bounds write caused by an integer overflow and heap-based buffer overflow related to the cdk_pkt_read function in opencdk/read-packet.c. This issue (which is a subset of the vendor's GNUTLS-SA-2017-3 report) is fixed in 3.5.10.
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 | 3.5.8-4 | — |
| Debian 13 | gnutls28 | 3.5.8-4 | — |
| Debian 12 | gnutls28 | 3.5.8-4 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | gnutls28 | 3.4.10-4ubuntu1.3 | USN-3318-1 |
| Ubuntu 14.04 LTS | gnutls26 | 2.12.23-12ubuntu2.8 | USN-3318-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | gnutls +4 | 3.3.26-9.el7 | RHSA-2017:2292 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP2 | gnutls | 3.2.15-18.3.1 | SUSE-SU-2017:1838-1 |
| SLES 11 SP4 | gnutls | 2.4.1-24.39.70.1 | SUSE-SU-2017:1886-1 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP2 | gnutls | 3.2.15-18.3.1 | SUSE-SU-2017:1838-1 |
| SLES for SAP 11 SP4 | gnutls | 2.4.1-24.39.70.1 | SUSE-SU-2017:1886-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.7.2-1.2 | openSUSE-SU-2024:10801-1 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | gnutls +4 | 3.3.26-9.el7 | ELSA-2017-2292 |
Advisories 7
- WID-SEC-2026-3115 GnuTLS: Schwachstelle ermöglicht Denial of Service BSI CERT-Bund (WID) · Aug 31, 2026
- RHSA-2017:2292 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- USN-3318-1 gnutls26, gnutls28 vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- openSUSE-SU-2024:10801-1 gnutls-3.7.2-1.2 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1838-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2017:1886-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- ELSA-2017-2292 Moderate: gnutls security, bug fix, and enhancement update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 7, 2017