NULL Pointer Dereference Vulnerability in GnuTLS Software
CVE-2025-6395

6.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Vendor
CVE Published:
10 July 2025

What is CVE-2025-6395?

A NULL pointer dereference flaw was identified in the GnuTLS software specifically in the function _gnutls_figure_common_ciphersuite(). This flaw occurs when the software processes certain configurations from a template file, enabling an attacker to induce an out-of-bounds (OOB) NULL pointer write. The exploitation of this vulnerability can cause memory corruption, which may lead to system crashes and result in a denial of service (DoS). Mitigation of this issue is essential to ensure system stability and security.

References

https://access.redhat.com/security/cve/CVE-2025-6395
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2376755
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.