Description
A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | libgnutls | < 3.8.10 | 3.8.10 |
| Red Hat | Red Hat Enterprise Linux 10 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions | — | — |
| Red Hat | Red Hat Enterprise Linux 9.4 Extended Update Support | — | — |
| Red Hat | Red Hat Ceph Storage 7 | — | — |
| Red Hat | Red Hat Discovery 2 | — | — |
| Red Hat | Red Hat Hardened Images | — | — |
| Red Hat | Red Hat Insights proxy 1.5 | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat OpenShift Container Platform 4 | — | — |
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 | 3.8.9-3 | — |
| Debian 13 | gnutls28 | 3.8.9-3 | — |
| Debian 12 | gnutls28 | 3.7.9-2+deb12u5 | DSA-5962-1 |
| Debian 11 | gnutls28 | 3.7.1-5+deb11u8 | DLA-4267-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 25.10 | gnutls28 | 3.8.9-3ubuntu1 | — |
| Ubuntu 24.04 LTS | gnutls28 | 3.8.3-1.1ubuntu3.4 | USN-7635-1 |
| Ubuntu 22.04 LTS | gnutls28 | 3.7.3-4ubuntu1.7 | USN-7635-1 |
Show 6 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro FIPS-updates 24.04 LTS | gnutls28 | 3.8.3-1.1ubuntu3.4+Fips1 | — |
| Ubuntu Pro FIPS-updates 22.04 LTS | gnutls28 | 3.7.3-4ubuntu1.7+Fips1 | — |
| Ubuntu Pro FIPS-preview 22.04 LTS | gnutls28 | No fix yet | — |
| Ubuntu Pro 20.04 LTS | gnutls28 | 3.6.13-2ubuntu1.12+esm1 | USN-7742-1 |
| Ubuntu Pro 18.04 LTS | gnutls28 | 3.5.18-1ubuntu1.6+esm2 | USN-7742-1 |
| Ubuntu Pro 16.04 LTS | gnutls28 | 3.4.10-4ubuntu1.9+esm2 | USN-7742-1 |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 10 | gnutls +5 | 3.8.9-9.el10_0.14 | RHSA-2025:16115 |
| RHEL 9 | gnutls +4 | 3.8.3-6.el9_6.2 | RHSA-2025:16116 |
| RHEL 8 | gnutls +4 | 3.6.16-8.el8_10.4 | RHSA-2025:17415 |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.4 EUS | gnutls +3 | 3.8.3-4.el9_4.4 | RHSA-2025:17348 |
| RHEL 9.2 E4S | gnutls +4 | 3.7.6-21.el9_2.4 | RHSA-2025:17361 |
| Red Hat Hardened Images 1 | gnutls +7 | 3.8.12-1.1.hum1 | RHSA-2026:7477 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 10 | gnutls +5 | 3.8.9-9.el10_0.14 | ALSA-2025:16115 |
| AlmaLinux 9 | gnutls +4 | 3.8.3-6.el9_6.2 | ALSA-2025:16116 |
| AlmaLinux 8 | gnutls +4 | 3.6.16-8.el8_10.4 | ALSA-2025:17415 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 10 | gnutls | 3.8.9-9.el10_0.14 | RLSA-2025:16115 |
| Rocky Linux 9 | gnutls | 3.8.3-6.el9_6.2 | RLSA-2025:16116 |
| Rocky Linux 8 | gnutls | 3.6.16-8.el8_10.4 | RLSA-2025:17415 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | gnutls | 3.8.3-150600.4.9.1 | SUSE-SU-2025:02595-1 |
| SLES 15 SP6 | gnutls | 3.8.3-150600.4.9.1 | SUSE-SU-2025:02595-1 |
| SLES 15 SP5 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLES 15 SP4 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLES 15 SP3 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | gnutls | 3.3.27-3.12.1 | SUSE-SU-2025:02521-1, SUSE-SU-2025:02520-1 |
| SLES for SAP 15 SP5 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLES for SAP 15 SP4 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLES for SAP 15 SP3 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
| SLE Micro 6.1 | gnutls | 3.8.3-slfo.1.1_4.1 | SUSE-SU-2025:20665-1 |
| SLE Micro 6.0 | gnutls | 3.8.3-4.1 | SUSE-SU-2025:20563-1 |
| SLE Micro 5.5 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLE Micro 5.4 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLE Micro 5.3 | gnutls | 3.7.3-150400.14.1 | SUSE-SU-2025:02340-1 |
| SLE Micro 5.2 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
| SLE Micro 5.1 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
| SLE HPC 15 SP5 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLE HPC 15 SP4 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SLE HPC 15 SP3 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
| SUSE Manager Server 4.3 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SUSE Manager Proxy 4.3 | gnutls | 3.7.3-150400.4.50.1 | SUSE-SU-2025:02589-1 |
| SUSE Enterprise Storage 7.1 | gnutls | 3.6.7-150200.14.37.1 | SUSE-SU-2025:02583-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | gnutls | 3.8.10-1.1 | openSUSE-SU-2025:15411-1 |
| openSUSE Leap 15.6 | gnutls | 3.8.3-150600.4.9.1 | SUSE-SU-2025:02595-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | gnutls | 3.8.11-r0 | — |
| Alpine v3.23 | gnutls | 3.8.11-r0 | — |
| Alpine v3.22 | gnutls | 3.8.12-r0 | — |
| Alpine v3.21 | gnutls | 3.8.12-r0 | — |
| Alpine v3.20 | gnutls | 3.8.12-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | gnutls +4 | 3.8.3-8.amzn2023.0.1 | ALAS2023-2025-1140 |
| Amazon Linux 2 | gnutls +4 | 3.3.29-9.amzn2.0.3 | ALAS2-2025-2969 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | gnutls | 3.8.3-6 | — |
| Azure Linux 2 (CBL-Mariner) | gnutls | 3.7.11-4 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 10 | gnutls +5 | 3.8.9-9.el10_0.14 | ELSA-2025-16115 |
| Oracle Linux 9 | gnutls +4 | 3.8.3-6.el9_6.2 | ELSA-2025-20606, ELSA-2025-16116 |
| Oracle Linux 8 | gnutls +4 | 3.6.16-8.el8_10.4 | ELSA-2025-17415 |
Advisories 39
- ALSA-2025:16115 Moderate: gnutls security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:16116 Moderate: gnutls security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2025:17415 Moderate: gnutls security, bug fix, and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2437 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 22, 2026
- RHSA-2026:7477 Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update Red Hat Security Advisories (RHSA) · Oct 15, 2026
- RHSA-2025:17361 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 14, 2026
- WID-SEC-2025-1526 GnuTLS: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 3, 2026
- RHSA-2025:17415 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 2, 2026
- RHSA-2025:17348 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 2, 2026
- RHSA-2025:16116 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 2, 2026
- RHSA-2025:16115 Red Hat Security Advisory: gnutls security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Sep 2, 2026
- USN-7742-1 gnutls28 vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026
- USN-7635-1 gnutls28 vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- WID-SEC-2026-1194 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Apr 21, 2026
- openSUSE-SU-2025:15411-1 gnutls-3.8.10-1.1 on GA media SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02589-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02340-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20563-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02583-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:20665-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- SUSE-SU-2025:02595-1 Security update for gnutls SUSE / openSUSE Security Updates · Mar 23, 2026
- DLA-4267-1 gnutls28 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-5962-1 gnutls28 - security update Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-2025:02521-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-2025:02520-1 Security update for gnutls SUSE / openSUSE Security Updates · Feb 4, 2026
- NCSC-2026-0022 Kwetsbaarheden verholpen in Oracle Communications producten NCSC-NL (Netherlands) · Jan 21, 2026
- WID-SEC-2026-0153 Oracle Communications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 2026
- WID-SEC-2025-2360 Oracle Communications Applications: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 17, 2025
- NCSC-2025-0330 Kwetsbaarheden verholpen in Oracle Communications producten NCSC-NL (Netherlands) · Oct 23, 2025
- RLSA-2025:16116 Moderate: gnutls security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 10, 2025
- RLSA-2025:17415 Moderate: gnutls security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 8, 2025
- ELSA-2025-17415 Moderate: gnutls security, bug fix, and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Oct 7, 2025
- RLSA-2025:16115 Moderate: gnutls security, bug fix, and enhancement update Rocky Linux Security Advisories · Oct 3, 2025
- ELSA-2025-16115 Moderate: gnutls security, bug fix, and enhancement update (Oracle Linux 10) Oracle Linux Security Advisories (ELSA) · Sep 19, 2025
- ELSA-2025-20606 Moderate: gnutls security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 19, 2025
- ELSA-2025-16116 Moderate: gnutls security, bug fix, and enhancement update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Sep 18, 2025
- ALAS2-2025-2969 Moderate: gnutls security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Aug 19, 2025
- ALAS2023-2025-1140 Moderate: gnutls security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Aug 18, 2025
- NCSC-2025-0246 Kwetsbaarheden verholpen in Siemens producten NCSC-NL (Netherlands) · Aug 12, 2025
References
- RHSA-2025:16115 vendor-advisory
- RHSA-2025:16116 vendor-advisory
- RHSA-2025:17181 vendor-advisory
- RHSA-2025:17348 vendor-advisory
- RHSA-2025:17361 vendor-advisory
- RHSA-2025:17415 vendor-advisory
- RHSA-2025:19088 vendor-advisory
- RHSA-2025:22529 vendor-advisory
- RHSA-2026:7477 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2025-32990 vdb-entry
- RHBZ#2359620 issue-tracking
- https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.html