CVE-2025-32988

Gnutls: vulnerability in gnutls othername san export

publishedCWE-415

A flaw was found in GnuTLS. A double-free vulnerability exists in GnuTLS due to incorrect ownership handling in the export logic of Subject Alternative Name (SAN) entries containing an otherName. If the type-id OID is invalid or malformed, GnuTLS will call asn1_delete_structure() on an ASN.1 node it does not own, leading to a double-free condition when the parent function or caller later attempts to free the same structure. This vulnerability can be triggered using only public GnuTLS APIs and may result in denial of service or memory corruption, depending on allocator behavior.

Technical severity6.5 mediumCVSS 3.1 · CNA: redhat

Published2025-07-10Source updated 2026-11-05

Collected2026-11-052 attributed sources

Fixes and workarounds

Workaround

Currently, no mitigation is available for this vulnerability.

Source: CNA: redhat

Affected products and versions

Affected products, source version ranges and reporting authorities
Product	Versions	Authority
`libgnutls` https://www.gnutls.org/	≥ 0; < 3.8.10 (affected, semver) Other versions: unaffected	CNA: redhat
Red Hat Enterprise Linux 10 Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	≥ 0:3.8.9-9.el10_0.14; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 8 Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	≥ 0:3.6.16-8.el8_10.4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9 Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	≥ 0:3.8.3-6.el9_6.2; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	≥ 0:3.7.6-21.el9_2.4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 9.4 Extended Update Support Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	≥ 0:3.8.3-4.el9_4.4; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Ceph Storage 7 Red Hat `rhceph/rhceph-7-rhel9` https://catalog.redhat.com/software/containers/	≥ 7; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Discovery 2 Red Hat `discovery/discovery-ui-rhel9` https://catalog.redhat.com/software/containers/	≥ 2.3.0-1760554384; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Hardened Images Red Hat `gnutls-main` https://catalog.redhat.com/software/containers/	≥ 3.8.12-1.1.hum1; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Insights proxy 1.5 Red Hat `insights-proxy/insights-proxy-container-rhel9` https://catalog.redhat.com/software/containers/	≥ 1.5.7-1759331989; < * (unaffected, rpm) Other versions: affected	CNA: redhat
Red Hat Enterprise Linux 6 Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unknown	CNA: redhat
Red Hat Enterprise Linux 7 Red Hat `gnutls` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: unknown	CNA: redhat
Red Hat OpenShift Container Platform 4 Red Hat `openshift/ose-rhel-coreos-8` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
Red Hat OpenShift Container Platform 4 Red Hat `openshift/ose-rhel-coreos-9` https://access.redhat.com/downloads/content/package-browser/	Range not reported Other versions: affected	CNA: redhat
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Siemens	≥ V3.1.5; < * (affected, custom) Other versions: unknown	ADP: siemens-SADP
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Siemens	≥ V3.1.5; < * (affected, custom) Other versions: unknown	ADP: siemens-SADP
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Siemens	≥ V3.1.5; < * (affected, custom) Other versions: unknown	ADP: siemens-SADP

Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.

CVSS assessments

CVSS scores, vectors and reporting authorities
Version / score	Vector	Authority
3.1 / 6.5 medium	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H`	CNA: redhat

Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

References

https://access.redhat.com/errata/RHSA-2025:16115CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:16116CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17181CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17348CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17361CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:17415CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:19088CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2025:22529CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:7477CNA: redhat · vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2025-32988CNA: redhat · vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2359622CNA: redhat · issue-tracking, x_refsource_REDHAT
https://lists.gnupg.org/pipermail/gnutls-help/2025-July/004883.htmlCNA: redhat
https://lists.debian.org/debian-lts-announce/2025/08/msg00005.htmlADP: CVE
http://www.openwall.com/lists/oss-security/2025/07/11/3ADP: CVE
https://cert-portal.siemens.com/productcert/html/ssa-082556.htmlADP: siemens-SADP

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