CVE-2025-32990

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, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

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, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols open source. GnuTLS has a trust management vulnerability, which originated from improper processing of CT SCT SCT expansion during X.509 certificate resolution, which may lead to information leakage.(CVE-2025-32989)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols open source. GnuTLS has a trust management vulnerability, which originated from improper processing of CT SCT SCT expansion during X.509 certificate resolution, which may lead to information leakage.(CVE-2025-32989)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols open source. GnuTLS has a trust management vulnerability, which originated from improper processing of CT SCT SCT expansion during X.509 certificate resolution, which may lead to information leakage.(CVE-2025-32989)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

GnuTLS is a secure communications library implementing the SSL, TLS and DTLS protocols and technologies around them. It provides a simple C language application programming interface (API) to access the secure communications protocols as well as APIs to parse and write X.509, PKCS #12, and other required structures. The project strives to provide a secure communications back-end, simple to use and integrated with the rest of the base Linux libraries. A back-end designed to work and be secure out of the box, keeping the complexity of TLS and PKI out of application code.

Security Fix(es):

A vulnerability, which was classified as critical, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations.This is going to have an impact on confidentiality, integrity, and availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.(CVE-2025-32988)

GnuTLS is a free secure communication library for implementing SSL, TLS and DTLS protocols. There is a security vulnerability in GnuTLS that originates from a heap buffer overflow in the certtool tool template parsing logic, which can lead to memory corruption and denial of service.(CVE-2025-32990)

A vulnerability, which was classified as problematic, was found in GnuTLS (Network Encryption Software) (affected version unknown).CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.This is going to have an impact on availability.There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-21000).(CVE-2025-6395)

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.

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.

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 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 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.

Root has patched CVE-2025-32990 in the rootio-gnutls package for Root:Alpine:3.22. Multiple fixed versions available.

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, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

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.

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.

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 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 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.

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, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

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, resulting in memory corruption and a denial-of-service (DoS) that could potentially crash the system.

• CVE-2025-32990: fix memory corruption in when parsing a template file

• CVE-2025-32990: fix memory corruption in when parsing a template file

• CVE-2025-32990: fix memory corruption in when parsing a template file

• CVE-2025-32990: fix memory corruption in when parsing a template file

• CVE-2025-32990: fix memory corruption in when parsing a template file

• SECURITY UPDATE: double-free when exporting SAN otherName
  • debian/patches/CVE-2025-32988.patch: fix double-free triggered when exporting certificates with multiple SAN otherName entries.
  • CVE-2025-32988
• SECURITY UPDATE: 1-byte heap write in certtool template parsing
  • debian/patches/CVE-2025-32990.patch: prevent 1-byte heap overwrite caused by malformed certificate template input in certtool.
  • CVE-2025-32990

• SECURITY UPDATE: double-free when exporting SAN otherName
  • debian/patches/CVE-2025-32988.patch: fix double-free triggered when exporting certificates with multiple SAN otherName entries.
  • CVE-2025-32988
• SECURITY UPDATE: 1-byte heap write in certtool template parsing
  • debian/patches/CVE-2025-32990.patch: prevent 1-byte heap overwrite caused by malformed certificate template input in certtool.
  • CVE-2025-32990

• CVE-2025-32990: fix memory corruption in when parsing a template file
• CVE-2025-32988: fix double-free vulnerability in export logic of Subject Alternative Name (SAN) entries containing an otherName

• CVE-2025-32990: fix heap-buffer-overflow flaw in template parsing logic to prevent OOB NULL pointer write and memory corruption

• CVE-2025-32990: fix heap-buffer-overflow flaw in template parsing logic to prevent OOB NULL pointer write and memory corruption

• CVE-2025-32990: fix heap-buffer-overflow issue in template parsing logic within certtool utility

• SECURITY UPDATE: heap buffer overflow in certtool template parsing
  • debian/patches/CVE-2025-32990.patch: use calloc(MAX_ENTRIES + 1) instead of malloc(MAX_ENTRIES) in READ_MULTI_LINE and READ_MULTI_LINE_TOKENIZED macros in src/certtool-cfg.c.
  • CVE-2025-32990
• SECURITY UPDATE: double free when exporting othernames in SAN
  • debian/patches/CVE-2025-32988.patch: remove erroneous asn1_delete_structure calls on non-owned ext parameter in _gnutls_write_new_othername in lib/x509/extensions.c.
  • CVE-2025-32988

null pointer dereference in _gnutls_figure_common_ciphersuite(). (CVE-2025-6395) Vulnerability in gnutls othername san export. (CVE-2025-32988) Vulnerability in gnutls sct extension parsing. (CVE-2025-32989) Vulnerability in gnutls certtool template parsing. (CVE-2025-32990)

These are all security issues fixed in the gnutls-3.8.10-1.1 package on the GA media of openSUSE Tumbleweed.

This update for gnutls fixes the following issues:

• CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
• CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries containing an otherName (bsc#1246232)
• CVE-2025-32989: Fix heap buffer overread when handling the CT SCT extension during X.509 certificate parsing (bsc#1246233)
• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
• CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries containing an otherName (bsc#1246232)
• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
• CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries containing an otherName (bsc#1246232)
• CVE-2025-32989: Fix heap buffer overread when handling the CT SCT extension during X.509 certificate parsing (bsc#1246233)
• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-6395: Fix NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)
• CVE-2025-32988: Fix double-free due to incorrect ownership handling in the export logic of SAN entries containing an otherName (bsc#1246232)
• CVE-2025-32989: Fix heap buffer overread when handling the CT SCT extension during X.509 certificate parsing (bsc#1246233)
• CVE-2025-32990: Fix 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)

This update for gnutls fixes the following issues:

• CVE-2025-32988: Fixed double-free due to incorrect ownership handling (bsc#1246232)
• CVE-2025-32989: Fixed heap buffer overread during X.509 certificate parsing (bsc#1246233)
• CVE-2025-32990: Fixed 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267)
• CVE-2025-6395: Fixed NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299)

This update for gnutls fixes the following issues:

• CVE-2025-32988: Fixed double-free due to incorrect ownership handling in the export logic of SAN entries containing an otherName (bsc#1246232).
• CVE-2025-32989: Fixed heap buffer overread when handling the CT SCT extension during X.509 certificate parsing (bsc#1246233).
• CVE-2025-32990: Fixed 1-byte heap buffer overflow when parsing templates with certtool (bsc#1246267).
• CVE-2025-6395: Fixed NULL pointer dereference when 2nd Client Hello omits PSK (bsc#1246299).