Medium [CVE-2025-32990] Gnutls: vulnerability in gnutls certtool template parsing
This medium-severity Red Hat Linux advisory covers CVE-2025-32990 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.
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Summary
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. Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).
Weakness: CWE-122.
Affected Red Hat products: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Ceph Storage 7; Red Hat Discovery 2; Red Hat Hardened Images; Red Hat Insights proxy 1.5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat OpenShift Container Platform 4.
Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7. Red Hat fixing advisory: RHSA-2025:16115, RHSA-2025:17415, RHSA-2025:16116, RHSA-2025:17361, RHSA-2025:17348, RHSA-2025:22529, RHSA-2025:19088, RHSA-2026:7477, RHSA-2025:17181.
Affected products named by the advisory: Red Hat package: gnutls.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
- gnutls-0:3.8.9-9.el10_0.14
- gnutls-0:3.6.16-8.el8_10.4
- gnutls-0:3.8.3-6.el9_6.2
- gnutls-0:3.7.6-21.el9_2.4
- gnutls-0:3.8.3-4.el9_4.4
- rhceph/rhceph-7-rhel9:7
- discovery/discovery-ui-rhel9:2.3.0-1760554384
- gnutls-main-3.8.12-1.1.hum1
- insights-proxy/insights-proxy-container-rhel9:1.5.7-1759331989
- RHSA-2025:16115
- RHSA-2025:17415
- RHSA-2025:16116
- RHSA-2025:17361
- RHSA-2025:17348
- RHSA-2025:22529
- RHSA-2025:19088
- RHSA-2026:7477
- RHSA-2025:17181
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
Mitigation checklist
- Currently, no mitigation is available for this vulnerability.
Official advisory · high-confidence parse· fetched 1 hour ago·verify at source
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