RHEL 10 : openssl (RHSA-2026:25237)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:25237 advisory. OpenSSL is a toolkit that implements the Secure Sockets Layer SSL and Transport Layer Security TLS protocols, as well as a full-strength...

CVE-2026-42766

A flaw was found in OpenSSL. A remote attacker could exploit a NULL pointer dereference vulnerability in the Cryptographic Message Syntax CMS decryption process by providing a specially crafted password-encrypted CMS message. This occurs because the keyDerivationAlgorithm field, which is optional...

Covert Channel

Overview Affected versions of this package are vulnerable to Covert Channel information exposure from CMSdecrypt and PKCS7decrypt. An attacker who can supply CMS or S/MIME messages and observe the application's error code and/or decryption output can use the victim's process as an adaptive chosen...

USN-8414-2 openssl, openssl1.0 vulnerabilities

USN-8414-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 14.04 LTS, Ubuntu 16.04 LTS, Ubuntu 18.04 LTS, and Ubuntu 20.04 LTS. Original advisory details: Frank Buss discovered that OpenSSL had a heap buffer over-read in ASN.1 content parsing. An...

ALPINE-CVE-2026-42766

Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgorithm field is define...

CVE-2026-42766

Issue summary: A specially crafted password-encrypted CMS message can trigger a NULL pointer dereference during CMS decryption. Impact summary: This NULL pointer dereference leads to an application crash and a Denial of Service. The CMS PasswordRecipientInfo.keyDerivationAlgorithm field is define...

ALPINE-CVE-2026-34182

Issue Summary: Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of these vulnerabilities may achieve...

CVE-2026-42768

The CMS_decrypt and PKCS7_decrypt functions in OpenSSL are vulnerable to a Bleichenbacher-style attack when an attacker can provide CMS or S/MIME messages and observe error codes or decryption outputs. The vulnerability exists in two variants: when the API is used without a recipient certificate,...

CVE-2026-34182

Issue Summary: Cryptographic Message Services CMS processing fails to perform sufficient input validation on the cipher and tag length fields of AuthEnvelopedData containers, leading to various potential compromises. Impact Summary: Attackers making use of these vulnerabilities may achieve...

CVE-2026-9076

OpenSSL is vulnerable to a heap out-of-bounds read in the kek_unwrap_key() function during CMS password-based decryption (RFC 3211 / PWRI key unwrap). The flaw occurs because the software fails to enforce a block cipher requirement for the Key Encryption Key (KEK) cipher. An attacker providing a ...

OpenSSL 安全漏洞

OpenSSL is an open-source encryption library developed by the OpenSSL team, capable of implementing Secure Sockets Layer SSLv2/v3 and Secure Transport Layer TLSv1 protocols. This product supports various encryption algorithms, including symmetric ciphers, hash algorithms, and secure hash...

JLSEC-2026-564 In GnuPG before 2.5.17, a crafted CMS (S/MIME) EnvelopedData message carrying an oversized wrapped...

In GnuPG before 2.5.17, a crafted CMS S/MIME EnvelopedData message carrying an oversized wrapped session key can cause a stack-based buffer overflow in gpg-agent during PKDECRYPT--kem=CMS handling. This can easily be leveraged for denial of service; however, there is also memory corruption that...

CLSA-2026-1778787445 Fix CVE(s): CVE-2026-28387, CVE-2026-28388, CVE-2026-28389

SECURITY UPDATE: Use-after-free / heap corruption in danematch of the X.509 verifier where the cached DANE-matched certificate was freed via OPENSSLfree instead of X509free, bypassing the X509 reference counting and freeing certificate fields that may still be referenced by other holders. An...

CLSA-2026-1777547052 openssl: Fix of CVE-2026-28389

CVE-2026-28389: fix NULL pointer dereference in dhcmssetsharedinfo and ecdhcmssetsharedinfo when the CMS KeyEncryptionAlgorithmIdentifier parameter field is omitted...

Medium: openssl

Issue Overview: NULL Pointer Dereference When Processing a Delta CRL NOTE: https://openssl-library.org/news/secadv/20260407.txt CVE-2026-28388 Possible NULL dereference when processing CMS KeyAgreeRecipientInfo CVE-2026-28389 Possible NULL dereference when processing CMS KeyTransportRecipientInfo...

JLSEC-2026-218 In situations where an attacker receives automated notification of the success or failure of a...

In situations where an attacker receives automated notification of the success or failure of a decryption attempt an attacker, after sending a very large number of messages to be decrypted, can recover a CMS/PKCS7 transported encryption key or decrypt any RSA encrypted message that was encrypted...

SUSE-SU-2026:1577-1 Security update for openssl-1_1

This update for openssl-11 fixes the following issues: - CVE-2026-28387: Potential use-after-free in DANE client code bsc1260441. - CVE-2026-28388: NULL Pointer Dereference When Processing a Delta CRL bsc1260442. - CVE-2026-28389: Possible NULL dereference when processing CMS KeyAgreeRecipientInf...

Security update for openssl-1_1

This update for openssl-11 fixes the following issues: CVE-2026-28390: NULL pointer dereference during processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo bsc1261678. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like Ya...

SUSE-SU-2026:1550-1 Security update for openssl-1_1

This update for openssl-11 fixes the following issues: - CVE-2026-28390: NULL pointer dereference during processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo bsc1261678...

Security update for openssl-3

This update for openssl-3 fixes the following issue: CVE-2026-28390: NULL pointer dereference during processing of a crafted CMS EnvelopedData message with KeyTransportRecipientInfo bsc1261678. Patch Instructions: To install this SUSE update use the SUSE recommended installation methods like YaST...