CVE-2026-40253

openCryptoki is an implementation of the PKCS #11 API that allows interfacing to devices that hold cryptographic information and perform cryptographic functions. openCryptoki provides application portability by isolating the application from the details of the cryptographic device. Isolating the application also provides an added level of security. The openCryptoki API provides a standard programming interface between applications and all kinds of portable cryptographic devices.

Security Fix(es):

openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.(CVE-2026-40253)

openCryptoki is an implementation of the PKCS #11 API that allows interfacing to devices that hold cryptographic information and perform cryptographic functions. openCryptoki provides application portability by isolating the application from the details of the cryptographic device. Isolating the application also provides an added level of security. The openCryptoki API provides a standard programming interface between applications and all kinds of portable cryptographic devices.

Security Fix(es):

openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.(CVE-2026-40253)

openCryptoki is an implementation of the PKCS #11 API that allows interfacing to devices that hold cryptographic information and perform cryptographic functions. openCryptoki provides application portability by isolating the application from the details of the cryptographic device. Isolating the application also provides an added level of security. The openCryptoki API provides a standard programming interface between applications and all kinds of portable cryptographic devices.

Security Fix(es):

openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.(CVE-2026-40253)

The opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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 opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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 opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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.

openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.

The opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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 opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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 opencryptoki packages contain version 2.11 of the PKCS#11 API, implemented for IBM Cryptocards, such as IBM 4764 and 4765 crypto cards. These packages includes support for the IBM 4758 Cryptographic CoProcessor (with the PKCS#11 firmware loaded), the IBM eServer Cryptographic Accelerator (FC 4960 on IBM eServer System p), the IBM Crypto Express2 (FC 0863 or FC 0870 on IBM System z), and the IBM CP Assist for Cryptographic Function (FC 3863 on IBM System z). The opencryptoki packages also bring a software token implementation that can be used without any cryptographic hardware. These packages contain the Slot Daemon (pkcsslotd) and general utilities.

Security Fix(es):

• openCryptoki: openCryptoki: Information disclosure and Denial of Service via malformed BER-encoded cryptographic objects (CVE-2026-40253)

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.

openCryptoki is a PKCS#11 library and provides tooling for Linux and AIX. In versions 3.26.0 and below, the BER/DER decoding functions in the shared common library (asn1.c) accept a raw pointer but no buffer length parameter, and trust attacker-controlled BER length fields without validating them against actual buffer boundaries. All primitive decoders are affected: ber_decode_INTEGER, ber_decode_SEQUENCE, ber_decode_OCTET_STRING, ber_decode_BIT_STRING, and ber_decode_CHOICE. Additionally, ber_decode_INTEGER can produce integer underflows when the encoded length is zero. An attacker supplying a malformed BER-encoded cryptographic object through PKCS#11 operations such as C_CreateObject or C_UnwrapKey, token loading from disk, or remote backend communication can trigger out-of-bounds reads. This affects all token backends (Soft, ICA, CCA, TPM, EP11, ICSF) since the vulnerable code is in the shared common library. A patch is available thorugh commit ed378f463ef73364c89feb0fc923f4dc867332a3.

• CVE-2026-40253: fix out-of-bounds read in BER/DER decode functions

• CVE-2026-40253: fix out-of-bounds read in BER/DER decode functions

These are all security issues fixed in the openCryptoki-3.26.0-6.1 package on the GA media of openSUSE Tumbleweed.

This update for openCryptoki fixes the following issues

Security issue:

• CVE-2026-40253: Updated fix for malformed BER-encoded cryptographic objects (bsc#1262283).

Non security issue:

• Refactored .spec file to fully support transactional and immutable operating systems (jsc#PED-14609):

• Migrated user and group creation (pkcs11, pkcsslotd) from imperative %pre shell commands to declarative systemd-sysusers configuration.
• Replaced manual /var directory tracking and %ghost directives with comprehensive systemd-tmpfiles configurations.
• Implemented dynamic, architecture-specific tmpfiles.d generation to properly provision hardware-specific token directories (e.g., ccatok, ep11tok, lite, and HSM_MK_CHANGE).

• Fixed permissions for /run/opencryptoki within tmpfiles.d to ensure the daemon can successfully drop privileges and bind its communication socket.

• Moved 32-bit and 64-bit shared library symlink creation (such as PKCS11_API.so, stdll, and methods) from %post scriptlets into the %install phase, ensuring they are correctly packaged and tracked on the read-only /usr partition.
• Removed legacy /etc/pkcs11 bash migration logic from %post, replacing it with a declarative tmpfiles.d symlink rule.

• Cleaned up scriptlets to only execute transaction-safe macros (such as ldconfig and systemd service handlers).

This update for openCryptoki fixes the following issues

Upgrade openCryptoki to version 3.27 (jsc#PED-14609):

• Add base support for PKCS#11 v3.2.
• Add support for PKCS#11 v3.2 C_VerifySignature[Init|Update|Final].
• Add support for PKCS#11 v3.2 C_EncapsulateKey/C_DecapsulateKey.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with RSA-PKCS and RSA-OAEP mechanisms.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the ECDH mechanism.
• Soft/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the DH-PKCS mechanism.
• Soft: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires OpenSSL 3.5 or later, or the OQS-provider must be configured).
• CCA: Add support for PKCS#11 v3.2 ML-DSA key type and mechanisms (requires CCA v8.4 or later)
• EP11: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires an EP11 host library v4.2 or later, and a CEX8P crypto card with firmware v9.6 or later on IBM z17, and v8.39 or later on IBM z16).
• p11sak: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types.
• Soft/ICA: Add support for PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• p11sak: Add support for key wrapping with PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 mechanism CKM_PUB_KEY_FROM_PRIV_KEY.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.0 Edwards and Montgomery key types and mechanisms.
• Soft/ICA: Support CKM_ECDH_AES_KEY_WRAP also for Montgomery keys.
• p11sak: Add support for PKCS#11 v3.0 Edwards and Montgomery key types.
• Soft: Add support for CKM_ECDH1_COFACTOR_DERIVE.
• CCA: Add support for additional RSA public exponent values 5, 17, or 257.
• p11sak: Add option to list-key command to show EP11 session IDs.
• Make the maximum number of token objects supported configurable.
• Fixes for CVE-2026-40253, CVE-2026-23893, and CVE-2026-22791.
• Bug fixes.

This update for openCryptoki fixes the following issue:

• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issues:

• CVE-2026-40253: updated fix by IBM for malformed BER-encoded cryptographic objects (bsc#1263819)

This update for openCryptoki fixes the following issues:

• CVE-2026-23893: use of symlinks in group-writable token directories can lead to privilege escalation and data exposure (bsc#1257116).
• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issues:

• CVE-2026-23893: use of symlinks in group-writable token directories can lead to privilege escalation and data exposure (bsc#1257116).
• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issues:

• CVE-2026-40253: Updated fix for malformed BER-encoded cryptographic objects (bsc#1263819)

This update for openCryptoki fixes the following issues

Security issue:

• CVE-2026-40253: Updated fix for malformed BER-encoded cryptographic objects (bsc#1262283).

Non security issue:

• Refactored .spec file to fully support transactional and immutable operating systems (jsc#PED-14609):

• Migrated user and group creation (pkcs11, pkcsslotd) from imperative %pre shell commands to declarative systemd-sysusers configuration.
• Replaced manual /var directory tracking and %ghost directives with comprehensive systemd-tmpfiles configurations.
• Implemented dynamic, architecture-specific tmpfiles.d generation to properly provision hardware-specific token directories (e.g., ccatok, ep11tok, lite, and HSM_MK_CHANGE).

• Fixed permissions for /run/opencryptoki within tmpfiles.d to ensure the daemon can successfully drop privileges and bind its communication socket.

• Moved 32-bit and 64-bit shared library symlink creation (such as PKCS11_API.so, stdll, and methods) from %post scriptlets into the %install phase, ensuring they are correctly packaged and tracked on the read-only /usr partition.
• Removed legacy /etc/pkcs11 bash migration logic from %post, replacing it with a declarative tmpfiles.d symlink rule.

• Cleaned up scriptlets to only execute transaction-safe macros (such as ldconfig and systemd service handlers).

This update for openCryptoki fixes the following issues

Security issue:

• CVE-2026-40253: Updated fix for malformed BER-encoded cryptographic objects (bsc#1262283).

Non security issue:

• Refactored .spec file to fully support transactional and immutable operating systems (jsc#PED-14609):

• Migrated user and group creation (pkcs11, pkcsslotd) from imperative %pre shell commands to declarative systemd-sysusers configuration.
• Replaced manual /var directory tracking and %ghost directives with comprehensive systemd-tmpfiles configurations.
• Implemented dynamic, architecture-specific tmpfiles.d generation to properly provision hardware-specific token directories (e.g., ccatok, ep11tok, lite, and HSM_MK_CHANGE).

• Fixed permissions for /run/opencryptoki within tmpfiles.d to ensure the daemon can successfully drop privileges and bind its communication socket.

• Moved 32-bit and 64-bit shared library symlink creation (such as PKCS11_API.so, stdll, and methods) from %post scriptlets into the %install phase, ensuring they are correctly packaged and tracked on the read-only /usr partition.
• Removed legacy /etc/pkcs11 bash migration logic from %post, replacing it with a declarative tmpfiles.d symlink rule.

• Cleaned up scriptlets to only execute transaction-safe macros (such as ldconfig and systemd service handlers).

This update for openCryptoki fixes the following issues:

• CVE-2026-40253: Updated fix for malformed BER-encoded cryptographic objects (bsc#1263819)

This update for openCryptoki fixes the following issues

Upgrade openCryptoki to version 3.27 (jsc#PED-14609):

• Add base support for PKCS#11 v3.2.
• Add support for PKCS#11 v3.2 C_VerifySignature[Init|Update|Final].
• Add support for PKCS#11 v3.2 C_EncapsulateKey/C_DecapsulateKey.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with RSA-PKCS and RSA-OAEP mechanisms.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the ECDH mechanism.
• Soft/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the DH-PKCS mechanism.
• Soft: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires OpenSSL 3.5 or later, or the OQS-provider must be configured).
• CCA: Add support for PKCS#11 v3.2 ML-DSA key type and mechanisms (requires CCA v8.4 or later)
• EP11: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires an EP11 host library v4.2 or later, and a CEX8P crypto card with firmware v9.6 or later on IBM z17, and v8.39 or later on IBM z16).
• p11sak: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types.
• Soft/ICA: Add support for PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• p11sak: Add support for key wrapping with PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 mechanism CKM_PUB_KEY_FROM_PRIV_KEY.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.0 Edwards and Montgomery key types and mechanisms.
• Soft/ICA: Support CKM_ECDH_AES_KEY_WRAP also for Montgomery keys.
• p11sak: Add support for PKCS#11 v3.0 Edwards and Montgomery key types.
• Soft: Add support for CKM_ECDH1_COFACTOR_DERIVE.
• CCA: Add support for additional RSA public exponent values 5, 17, or 257.
• p11sak: Add option to list-key command to show EP11 session IDs.
• Make the maximum number of token objects supported configurable.
• Fixes for CVE-2026-40253, CVE-2026-23893, and CVE-2026-22791.
• Bug fixes.

This update for openCryptoki fixes the following issues

Upgrade openCryptoki to version 3.27 (jsc#PED-14609):

• Add base support for PKCS#11 v3.2.
• Add support for PKCS#11 v3.2 C_VerifySignature[Init|Update|Final].
• Add support for PKCS#11 v3.2 C_EncapsulateKey/C_DecapsulateKey.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with RSA-PKCS and RSA-OAEP mechanisms.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the ECDH mechanism.
• Soft/EP11: Add support for PKCS#11 v3.2 en-/decapsulate with the DH-PKCS mechanism.
• Soft: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires OpenSSL 3.5 or later, or the OQS-provider must be configured).
• CCA: Add support for PKCS#11 v3.2 ML-DSA key type and mechanisms (requires CCA v8.4 or later)
• EP11: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types and mechanisms (requires an EP11 host library v4.2 or later, and a CEX8P crypto card with firmware v9.6 or later on IBM z17, and v8.39 or later on IBM z16).
• p11sak: Add support for PKCS#11 v3.2 ML-DSA and ML-KEM key types.
• Soft/ICA: Add support for PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• p11sak: Add support for key wrapping with PKCS#11 v3.2 mechanisms CKM_ECDH_X_AES_KEY_WRAP and CKM_ECDH_COF_AES_KEY_WRAP.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.2 mechanism CKM_PUB_KEY_FROM_PRIV_KEY.
• Soft/ICA/CCA/EP11: Add support for PKCS#11 v3.0 Edwards and Montgomery key types and mechanisms.
• Soft/ICA: Support CKM_ECDH_AES_KEY_WRAP also for Montgomery keys.
• p11sak: Add support for PKCS#11 v3.0 Edwards and Montgomery key types.
• Soft: Add support for CKM_ECDH1_COFACTOR_DERIVE.
• CCA: Add support for additional RSA public exponent values 5, 17, or 257.
• p11sak: Add option to list-key command to show EP11 session IDs.
• Make the maximum number of token objects supported configurable.
• Fixes for CVE-2026-40253, CVE-2026-23893, and CVE-2026-22791.
• Bug fixes.

This update for openCryptoki fixes the following issue:

• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issue:

• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issue:

• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

This update for openCryptoki fixes the following issue:

• CVE-2026-40253: malformed BER-encoded cryptographic objects can lead to information disclosure and denial of service (bsc#1262283).

It was discovered that primitive decoders in openCryptoki produced integer underflows when the encoded length was zero. An attacker could possibly use this issue to trigger out-of-bounds reads. (CVE-2026-40253)

It was discovered that openCryptoki incorrectly handled symlinks. An attacker in the token-group could possibly use this issue to achieve privilege escalation or access sensitive information. (CVE-2026-23893)

It was discovered that primitive decoders in openCryptoki produced integer underflows when the encoded length was zero. An attacker could possibly use this issue to trigger out-of-bounds reads. (CVE-2026-40253)

It was discovered that openCryptoki incorrectly handled symlinks. An attacker in the token-group could possibly use this issue to achieve privilege escalation or access sensitive information. (CVE-2026-23893)

It was discovered that the CKM_ECDH_AES_KEY_WRAP implementation had a heap buffer overflow vulnerability. An attacker could possibly use this issue to trigger heap corruption, or denial-of-service. (CVE-2026-22791)