Advisory severityMedium6.5Red Hat Linux

Medium [CVE-2025-6395] null pointer dereference in _gnutls_figure_common_ciphersuite

This medium-severity Red Hat Linux advisory covers CVE-2025-6395 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-6395 Source published Jul 10, 2025Source updated Jul 10, 2025

VulniPulse record published Jul 14, 2026

CVE-2025-6395

Affected products & platforms

Red Hat LinuxRed Hat Enterprise Linux

Open source advisory

Summary

A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite(). Red Hat severity: Moderate — CVSS 6.5 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H).

Weakness: CWE-476.

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 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-2025:17181.

Affected products named by the advisory: Red Hat package: gnutls.

Is CVE-2025-6395 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-6395 is not in the CISA KEV catalog (checked Nov 10, 2026) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-6395?

Upgrade to a fixed release named by Red Hat:

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
insights-proxy/insights-proxy-container-rhel9:1.5.7-1759331989
RHSA-2025:16115
RHSA-2025:17415
RHSA-2025:16116
RHSA-2025:17361

4 more fixed releases are listed below.

Confirm against the vendor advisory before you patch.

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 18 days ago·verify at source

Fixed versions

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
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-2025:17181

Official advisory · high-confidence parse· fetched 18 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Official advisory · high-confidence parse· fetched 18 days ago·verify at source

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Sources

Official and corroborating records used to build this advisory.

Red Hat Security Data APIofficial
Official vendor source used to discover this advisory; it remains the authority for affected products and remediation. Discovered from the machine-readable feed https://access.redhat.com/hydra/rest/securitydata/cve.json; this link opens the Red Hat Linux advisory index instead of the raw feed document.
Red Hat Linux
Official vendor advisoryofficial
Official advisory page fetched and parsed; accepted detail fields are attributed to this page.
Red Hat Linux
CVE.org CNA affected-product recordCVE.org
Structured CNA affected[] data independently confirmed the affected product scope; native advisory content remains authoritative.
CVE Program

Cross-references

Validate CVE metadata against the authoritative registries.

CVE-2025-6395NVD CVE.org MITRE

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Medium [CVE-2025-6395] null pointer dereference in _gnutls_figure_common_ciphersuite

Summary

Is CVE-2025-6395 exploited?

How do I fix CVE-2025-6395?

Affected versions

Mitigation checklist

Get an email when Red Hat RHEL & SELinux publishes the next one.

More Red Hat Linux advisories

Monitor future Red Hat Linux CVEs from your phone.

Discussion(0)