CVE-2025-6395

Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()

Published Jul 10, 2025 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().

Remediation

Vendor Workaround

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.

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4267-1 gnutls28 security update
Debian DSA Debian DSA DSA-5962-1 gnutls28 security update
EUVD EUVD EUVD-2025-21000 A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
Ubuntu USN Ubuntu USN USN-7635-1 GnuTLS vulnerabilities
Ubuntu USN Ubuntu USN USN-7742-1 GnuTLS vulnerabilities
History
Type Values Removed Values Added
First Time appeared Redhat rhel Els
CPEs cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:rhel_els:6
cpe:/o:redhat:rhel_els:7
Vendors & Products Redhat rhel Els
Type Values Removed Values Added
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos
Type Values Removed Values Added
First Time appeared Redhat rhivos
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos
Type Values Removed Values Added
First Time appeared Redhat ceph Storage
CPEs cpe:/a:redhat:ceph_storage:7::el9
Vendors & Products Redhat ceph Storage
References
Type Values Removed Values Added
First Time appeared Redhat insights Proxy
CPEs cpe:/a:redhat:insights_proxy:1.5::el9
Vendors & Products Redhat insights Proxy
References
Type Values Removed Values Added
First Time appeared Redhat discovery
CPEs cpe:/a:redhat:discovery:2::el9
Vendors & Products Redhat discovery
References
Type Values Removed Values Added
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:8 cpe:/a:redhat:enterprise_linux:8::appstream
cpe:/o:redhat:enterprise_linux:8::baseos
References
Type Values Removed Values Added
First Time appeared Redhat rhel E4s
CPEs cpe:/a:redhat:rhel_e4s:9.2::appstream
cpe:/o:redhat:rhel_e4s:9.2::baseos
Vendors & Products Redhat rhel E4s
References
Type Values Removed Values Added
First Time appeared Redhat rhel Eus
CPEs cpe:/a:redhat:rhel_eus:9.4::appstream
cpe:/o:redhat:rhel_eus:9.4::baseos
Vendors & Products Redhat rhel Eus
References
Type Values Removed Values Added
First Time appeared Redhat rhivos
CPEs cpe:/o:redhat:rhivos:1
Vendors & Products Redhat rhivos
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:9 cpe:/a:redhat:enterprise_linux:9::appstream
cpe:/o:redhat:enterprise_linux:9::baseos
References
Type Values Removed Values Added
CPEs cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:10.0
References
Type Values Removed Values Added
Metrics epss

{'score': 0.0004}

epss

{'score': 0.00053}

Type Values Removed Values Added
Description A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite(). When it reads certain settings from a template file, it can allow an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial of service (DoS) that could crash the system. A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
Type Values Removed Values Added
Metrics epss

{'score': 0.0004}

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description No description is available for this CVE. A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite(). When it reads certain settings from a template file, it can allow an attacker to cause an out-of-bounds (OOB) NULL pointer write, resulting in memory corruption and a denial of service (DoS) that could crash the system.
Title gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite() Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Type Values Removed Values Added
Description No description is available for this CVE.
Title gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite()
Weaknesses CWE-476
References
Metrics threat_severity

None

cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Nov 5, 2026, 4:32 PM
Reserved
Jun 20, 2025, 6:26 AM
Status
Deferred
Published
Jul 10, 2025, 4:15 PM
Modified
Nov 5, 2026, 5:17 PM
Severity
Moderate
Public date
Jul 10, 2025, 7:56 AM