Summary
The gnutls packages provide the GNU Transport Layer Security (GnuTLS) library, which implements cryptographic algorithms and protocols such as SSL, TLS, and DTLS.
Security Fix(es):
* gnutls: Vulnerability in GnuTLS certtool template parsing (CVE-2025-32990)
* gnutls: Vulnerability in GnuTLS SCT extension parsing (CVE-2025-32989)
* gnutls: Vulnerability in GnuTLS otherName SAN export (CVE-2025-32988)
* gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite() (CVE-2025-6395)
Bug Fix(es) and Enhancement(s):
* gnutls: Vulnerability in GnuTLS certtool template parsing (BZ#2359620)
* gnutls: Vulnerability in GnuTLS SCT extension parsing (BZ#2359621)
* gnutls: Vulnerability in GnuTLS otherName SAN export (BZ#2359622)
* gnutls: NULL pointer dereference in _gnutls_figure_common_ciphersuite() (BZ#2376755)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 5
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | gnutls | 3.8.3-6.el9_6.2 |
| AlmaLinux · 9 | gnutls-c++ | 3.8.3-6.el9_6.2 |
| AlmaLinux · 9 | gnutls-dane | 3.8.3-6.el9_6.2 |
| AlmaLinux · 9 | gnutls-devel | 3.8.3-6.el9_6.2 |
| AlmaLinux · 9 | gnutls-utils | 3.8.3-6.el9_6.2 |
Vulnerabilities 4
-
Medium 6.5
Gnutls: vulnerability in gnutls othername san export
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 as…
-
Medium 6.5
Gnutls: vulnerability in gnutls certtool template parsing
A heap-buffer-overflow (off-by-one) flaw was found in the GnuTLS software in the template parsing logic within the certtool utility. When it reads certain settings from a template file, it allows an attacker to cause an out-of-bounds (OOB) NULL pointer write,…
-
Medium 6.5
Gnutls: null pointer dereference in _gnutls_figure_common_ciphersuite()
A NULL pointer dereference flaw was found in the GnuTLS software in _gnutls_figure_common_ciphersuite().
-
Medium 5.3
Gnutls: vulnerability in gnutls sct extension parsing
A heap-buffer-overread vulnerability was found in GnuTLS in how it handles the Certificate Transparency (CT) Signed Certificate Timestamp (SCT) extension during X.509 certificate parsing. This flaw allows a malicious user to create a certificate containing a …
References
-
report
https://access.redhat.com/security/cve/CVE-2025-32988
-
report
https://access.redhat.com/security/cve/CVE-2025-32989
-
report
https://access.redhat.com/security/cve/CVE-2025-32990
-
report
https://access.redhat.com/security/cve/CVE-2025-6395
-
report
https://bugzilla.redhat.com/2359620
-
report
https://bugzilla.redhat.com/2359621
-
report
https://bugzilla.redhat.com/2359622
-
report
https://bugzilla.redhat.com/2376755
-
advisory
https://errata.almalinux.org/9/ALSA-2025-16116.html