Log in Start free

Vulnerability · Published Jul 10, 2025 · Assigned by redhat

CVE-2025-6395Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()

Medium 6.5

In plain English

A medium-severity null pointer dereference in libgnutls. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 56% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.8%top 44.2% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:10gnutls3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:8gnutls3.6.16-8.el8_10.4ALSA-2025:17415
AlmaLinux:9gnutls3.8.3-6.el9_6.2ALSA-2025:16116
AlmaLinux:10gnutls-c++3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:8gnutls-c++3.6.16-8.el8_10.4ALSA-2025:17415
AlmaLinux:9gnutls-c++3.8.3-6.el9_6.2ALSA-2025:16116
AlmaLinux:10gnutls-dane3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:8gnutls-dane3.6.16-8.el8_10.4ALSA-2025:17415
AlmaLinux:9gnutls-dane3.8.3-6.el9_6.2ALSA-2025:16116
AlmaLinux:10gnutls-devel3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:8gnutls-devel3.6.16-8.el8_10.4ALSA-2025:17415
AlmaLinux:9gnutls-devel3.8.3-6.el9_6.2ALSA-2025:16116
AlmaLinux:10gnutls-fips3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:10gnutls-utils3.8.9-9.el10_0.14ALSA-2025:16115
AlmaLinux:8gnutls-utils3.6.16-8.el8_10.4ALSA-2025:17415
AlmaLinux:9gnutls-utils3.8.3-6.el9_6.2ALSA-2025:16116
Alpine:v3.20gnutls3.8.12-r0ALPINE-CVE-2025-6395
Alpine:v3.21gnutls3.8.12-r0ALPINE-CVE-2025-6395
Alpine:v3.22gnutls3.8.12-r0ALPINE-CVE-2025-6395
Alpine:v3.23gnutls3.8.11-r0ALPINE-CVE-2025-6395
Alpine:v3.24gnutls3.8.11-r0ALPINE-CVE-2025-6395
Debian:12gnutls283.7.9-2+deb12u5DSA-5962-1
Debian:12gnutls283.7.9-2+deb12u5DEBIAN-CVE-2025-6395
Debian:13gnutls283.8.9-3DEBIAN-CVE-2025-6395
Debian:14gnutls283.8.9-3DEBIAN-CVE-2025-6395
Rocky Linux:10gnutls0:3.8.9-9.el10_0.14RLSA-2025:16115
Rocky Linux:8gnutls0:3.6.16-8.el8_10.4RLSA-2025:17415
Rocky Linux:9gnutls0:3.8.3-6.el9_6.2RLSA-2025:16116
Ubuntu:22.04:LTSgnutls283.7.3-4ubuntu1.7USN-7635-1
Ubuntu:22.04:LTSgnutls283.7.3-4ubuntu1.7UBUNTU-CVE-2025-6395
Ubuntu:24.04:LTSgnutls283.8.3-1.1ubuntu3.4UBUNTU-CVE-2025-6395
Ubuntu:24.04:LTSgnutls283.8.3-1.1ubuntu3.4USN-7635-1
Ubuntu:25.10gnutls283.8.9-3ubuntu1UBUNTU-CVE-2025-6395

Affected products (as reported)

VendorProductVersions
libgnutls 0 – before 3.8.10
Red Hat Red Hat Enterprise Linux 10 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support see references
Red Hat Red Hat Ceph Storage 7 see references
Red Hat Red Hat Discovery 2 see references
Red Hat Red Hat Insights proxy 1.5 see references
Red Hat Red Hat Enterprise Linux 6 see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat OpenShift Container Platform 4 see references
Red Hat Red Hat OpenShift Container Platform 4 see references

Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H

References