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ALSA-2026:25237 — Important: openssl security update

Affected: AlmaLinux:10: openssl, AlmaLinux:10: openssl-devel, AlmaLinux:10: openssl-libs, AlmaLinux:10: openssl-perl

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

* openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing (CVE-2026-7383) * openssl: OpenSSL: Denial of Service due to heap out-of-bounds read in CMS password-based decryption (CVE-2026-9076) * openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure. (CVE-2026-34180) * openssl: PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys (CVE-2026-34181) * openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages (CVE-2026-34182) * openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler (CVE-2026-34183) * openssl: NULL pointer dereference in QUIC server initial packet handling (CVE-2026-42764) * openssl: Possible NULL Dereference in Password-Based CMS Decryption (CVE-2026-42766) * openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption (CVE-2026-42767) * openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt() (CVE-2026-42768) * openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate (CVE-2026-42769) * openssl: FFC-DH Peer Validation Uses Attacker-Supplied q (CVE-2026-42770) * openssl: AES-OCB IV Ignored on EVP_Cipher() Path (CVE-2026-45445) * openssl: Incorrect Tag…

BELL-CVE-2026-42766

Affected: Alpaquita:23: openssl, Alpaquita:25: openssl, Alpaquita:stream: openssl, BellSoft Hardened Containers:23: openssl, BellSoft Hardened Containers:25: openssl, BellSoft Hardened Containers:stream: openssl

certfr-2026-avi-0717 — De multiples vulnérabilités ont été découvertes dans OpenSSL. Certaines d'entre elles permettent à un attaquant de prov…

certfr-2026-avi-0717

EUVD-2026-326332

fkie_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 defined as OPTIONAL in the ASN.1 specification and may therefore be absent in specially crafted inputs. During the password-based CMS decryption the OpenSSL CMS implementation dereferences this field without first checking whether it was present.

An attacker who supplies such a CMS message to an application performing password-based CMS decryption can trigger an application crash, leading to a Denial of Service.

Applications that process password-encrypted CMS messages may be affected.

The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

GHSA-58mv-qqmv-gqgv

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.

An attacker who supplies such a CMS message to an application performing password-based CMS decryption can trigger an application crash, leading to a Denial of Service.

Applications that process password-encrypted CMS messages may be affected.

The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

msrc_CVE-2026-42766 — Possible NULL Dereference in Password-Based CMS Decryption

msrc_CVE-2026-42766

OESA-2026-2748 — compat-openssl11 security update

Affected: openEuler:24.03-LTS-SP1: compat-openssl11

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security (TLS) and Secure Sockets Layer (SSL) protocols. Security Fix(es):

Issue summary: Parsing a crafted DER-encoded ASN.1 structure with a primitive element whose content exceeds 2 gigabytes in length may cause a heap buffer over-read on 64-bit Unix and Unix-like platforms.

Impact summary: The heap buffer over-read may crash the application (Denial of Service) or to load into the decoded ASN.1 object contents of memory beyond the end of the input buffer. More typically such ASN.1 elements would instead be truncated.

An integer truncation in OpenSSL's ASN.1 decoder causes the content length of an ASN.1 primitive element to be mishandled when it exceeds 2 gigabytes. In the worst case the truncated length is treated as a request to scan the binary content for a terminating zero byte, possibly causing OpenSSL to read either less than or beyond the end of the allocated buffer.

Applications that pass attacker-supplied data to d2i_X509(), d2i_PKCS7(), or any other d2i_* decoding function are affected. OpenSSL's own command-line tools are not vulnerable, as data read through the BIO layer is checked before it reaches the affected code. The issue only affects 64-bit Unix and Unix-like platforms; 32-bit platforms and 64-bit Windows are not affected.

The FIPS modules in 4.0, 3.6, 3.5, 3.4 and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS…

openSUSE-SU-2026:11023-1 — libopenssl-3-devel-3.5.3-6.1 on GA media

libopenssl-3-devel-3.5.3-6.1 on GA media

RHSA-2026:26319 — Red Hat Security Advisory: Red Hat Update Infrastructure 5.2 security update

gnutls: gnutls: Security bypass allows acceptance of revoked server certificates via crafted OCSP response gnutls: GnuTLS: Policy bypass due to case-sensitive nameConstraints comparison glibc: glibc: Denial of Service via iconv() function with specific character sets glibc: glibc: Incorrect DNS response parsing via crafted DNS server response glibc: glibc: Invalid DNS hostname returned via gethostbyaddr functions gnutls: gnutls: Information disclosure via heap overread in RSA key exchange gnutls: gnutls: Information disclosure via timing side-channel in PKCS#7 padding removal openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing openssl: OpenSSL: Denial of Service due to heap out-of-bounds read in CMS password-based decryption openssl: OpenSSL: Denial of Service due to NULL pointer dereference in CMS EnvelopedData processing gnutls: GnuTLS: Denial of Service via DTLS zero-length fragment gnutls: GnuTLS: Denial of Service via heap buffer overflow in DTLS handshake fragment reassembly openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure. openssl: PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler vim: Vim zip.vim plugin: Arbitrary file overwrite via path traversal bypass gnutls: gnutls: Denial of Service via DTLS packet reordering vu…

RLSA-2026:25237 — Important: openssl security update

Affected: Rocky Linux:10: openssl

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL) and Transport Layer Security (TLS) protocols, as well as a full-strength general-purpose cryptography library.

Security Fix(es):

* openssl: OpenSSL: Heap buffer overflow due to signed integer overflow in Unicode output sizing (CVE-2026-7383)

* openssl: OpenSSL: Denial of Service due to heap out-of-bounds read in CMS password-based decryption (CVE-2026-9076)

* openssl: OpenSSL: Heap buffer over-read in ASN.1 decoding can lead to denial of service or information disclosure. (CVE-2026-34180)

* openssl: PKCS#12 Files with PBMAC1 Are Accepted with Short HMAC Keys (CVE-2026-34181)

* openssl: CMS AuthEnvelopedData Processing May Accept Forged Messages (CVE-2026-34182)

* openssl: Unbounded Memory Growth in the QUIC PATH_CHALLENGE Handler (CVE-2026-34183)

* openssl: NULL pointer dereference in QUIC server initial packet handling (CVE-2026-42764)

* openssl: Possible NULL Dereference in Password-Based CMS Decryption (CVE-2026-42766)

* openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption (CVE-2026-42767)

* openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt() (CVE-2026-42768)

* openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate (CVE-2026-42769)

* openssl: FFC-DH Peer Validation Uses Attacker-Supplied q (CVE-2026-42770)

* openssl: AES-OCB IV Ignored on EVP_Cipher() Path (CVE-2026-45445)

* openssl: Incorrect Tag Processing for Empt…

SUSE-SU-2026:22100-1 — Security update for openssl-3

Security update for openssl-3

UBUNTU-CVE-2026-42766

Affected: Ubuntu:Pro:14.04:LTS: openssl, Ubuntu:Pro:16.04:LTS: openssl, Ubuntu:Pro:16.04:LTS: edk2, Ubuntu:Pro:16.04:LTS: nodejs, Ubuntu:Pro:FIPS:16.04:LTS: openssl, Ubuntu:Pro:18.04:LTS: openssl, Ubuntu:Pro:18.04:LTS: openssl1.0, Ubuntu:Pro:18.04:LTS: edk2, Ubuntu:Pro:18.04:LTS: nodejs, Ubuntu:Pro:FIPS-updates:18.04:LTS: openssl and 20 more

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 defined as OPTIONAL in the ASN.1 specification and may therefore be absent in specially crafted inputs. During the password-based CMS decryption the OpenSSL CMS implementation dereferences this field without first checking whether it was present. An attacker who supplies such a CMS message to an application performing password-based CMS decryption can trigger an application crash, leading to a Denial of Service. Applications that process password-encrypted CMS messages may be affected. The FIPS modules in 4.0, 3.6, 3.5, 3.4, and 3.0 are not affected by this issue, as the affected code is outside the OpenSSL FIPS module boundary.

WID-SEC-W-2026-1852 — OpenSSL: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um beliebigen Programmcode auszuführen, Sicherheitsmaßnahmen zu umgehen, vertrauliche Informationen offenzulegen, Daten zu manipulieren oder einen Denial-of-Service-Zustand zu verursachen.