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ALSA-2026:67154 — Important: openssl security, bug fix, and enhancement update

2026-10-02T13:05:32.187408+00:00

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: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456) * openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798) * openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072) * openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076) * openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457) * openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874) * openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073) * openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074) * openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)

Bug Fix(es) and Enhancement(s):

* openssl: HollowByte remote memory-exhaustion DoS fix may be missing [AlmaLinux 10.2.z] (JIRA:AlmaLinux-212362)

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.

bdu:2026-14718

2026-10-02T13:05:32.187501+00:00

bdu:2026-14718

BELL-CVE-2026-63074

2026-10-02T13:05:32.187519+00:00

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-1079 — De multiples vulnérabilités ont été découvertes dans OpenSSL. Elles permettent à un attaquant de provoquer un déni de s…

2026-10-02T13:05:32.187554+00:00

certfr-2026-avi-1079

EUVD-2026-358670

2026-10-02T13:05:32.187569+00:00

EUVD-2026-358670

fkie_cve-2026-63074

2026-10-02T13:05:32.187580+00:00

Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions.

CWE: CWE-770: Allocation of Resources Without Limits or Throttling

Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service attacks in which an attacker sends messages intending to be rejected with a large list of additional certificates repeatedly, forcing the server to store them indefinitely. The issue was fixed by removing the added extra certs if the message is rejected, using the same method as when the context is configured to not do caching at all.

FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

GHSA-2q27-mpm9-44m4

2026-10-02T13:05:32.187613+00:00

CWE: CWE-770: Allocation of Resources Without Limits or Throttling

FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

msrc_CVE-2026-63074 — CMP Indefinite Cache Growth of ExtraCerts

2026-10-02T13:05:32.187638+00:00

msrc_CVE-2026-63074

OESA-2026-3624 — openssl security update

2026-10-02T13:05:32.187654+00:00

Affected: openEuler:24.03-LTS-SP1: openssl

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):

CWE: CWE-770: Allocation of Resources Without Limits or Throttling

openSUSE-SU-2026:11623-1 — libopenssl-3-devel-3.5.3-8.1 on GA media

2026-10-02T13:05:32.187697+00:00

libopenssl-3-devel-3.5.3-8.1 on GA media

RHSA-2026:59635 — Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

2026-10-02T13:05:32.187720+00:00

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: RPK server signature algorithm selection can dereference a missing certificate openssl: QUIC server may trigger double free when processing INITIAL packet 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 openssl: Double-free When Checking OCSP Stapled Response openssl: NULL pointer dereference in QUIC server initial packet handling openssl: NULL Dereference in Certificate Verification with OCSP Checking openssl: Possible NULL Dereference in Password-Based CMS Decryption openssl: NULL Pointer Dereference in CRMF EncryptedValue Decryption openssl: Multi-RecipientInfo Bleichenbacher Oracle in CMS_decrypt() and PKCS7_decrypt() openssl: Trust-Anchor Substitution via cert/issuer Typo in CMP rootCaKeyUpdate openssl: FFC-DH Peer Validation Uses Attacker-Supplied q openssl: Possible Out of Bounds Read in X509_VERIFY_PARAM_set1_email() openssl: AES-OCB IV Ignored on EVP_Cipher() Path openssl: Incorrect Tag Processing for Empty Messages in AES-GCM-SIV and AES-SIV modes openssl: Heap Use-After-Free in OpenSSL PKCS7_veri…

RLSA-2026:67154 — Important: openssl security, bug fix, and enhancement update

2026-10-02T13:05:32.187787+00:00

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: Denial of Service via unbounded memory growth in QUIC server (CVE-2026-14456)

* openssl: QUIC server may trigger double free when processing INITIAL packet (CVE-2026-18798)

* openssl: heap buffer overflow in CMS key unwrapping (CVE-2026-63072)

* openssl: invalid pointer dereference in CMP server via crafted protectionAlg (CVE-2026-63076)

* openssl: RPK server signature algorithm selection can dereference a missing certificate (CVE-2026-14457)

* openssl: excessive memory use buffering DTLS records for a future epoch (CVE-2026-54874)

* openssl: untrusted sender DN used as format string in CMP response validation (CVE-2026-63073)

* openssl: CMP indefinite cache growth of ExtraCerts (CVE-2026-63074)

* openssl: QUIC ACK-only packet retention can cause memory exhaustion (CVE-2026-63075)

Bug Fix(es) and Enhancement(s):

* openssl: HollowByte remote memory-exhaustion DoS fix may be missing [Rocky Linux 10.2.z] (JIRA:Rocky Linux-212362)

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.

SUSE-SU-2026:23463-1 — Security update for openssl-3

2026-10-02T13:05:32.187822+00:00

Security update for openssl-3

UBUNTU-CVE-2026-63074

2026-10-02T13:05:32.187842+00:00

Affected: Ubuntu:Pro:16.04:LTS: nodejs, Ubuntu:Pro:18.04:LTS: nodejs, Ubuntu:22.04:LTS: openssl, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl, Ubuntu:Pro:FIPS-preview:22.04:LTS: openssl-fips, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:22.04:LTS: openssl-fips, Ubuntu:24.04:LTS: edk2, Ubuntu:24.04:LTS: openssl, Ubuntu:Pro:FIPS-updates:24.04:LTS: openssl-fips and 3 more

Issue summary: The OpenSSL Certificate Management Protocol (CMP) caches additional certificates (extraCerts) sent in a CMP message, but never expunges them (for instance if they are invalid). If a server reuses an OSSL_CMP_CTX frequently, this cache of extraCerts may grow unboundedly, and a malicious client may flood a CMP server with requests driving this growth. Impact summary: Users utilizing a CMP server that reuses a single OSSL_CMP_CTX for the lifetime of a server process may observe unbounded memory growth in the event a malicious client repeatedly sends requests containing unique extra certificates, which may lead to OOM conditions. CWE: CWE-770: Allocation of Resources Without Limits or Throttling Description: If a remote user sends CMP messages to a server with a list of extraCerts and the message is rejected, the extraCerts from the message remains in the server contexts untrusted certificate stack. This exposes servers with long lived ctx objects to Denial of Service attacks in which an attacker sends messages intending to be rejected with a large list of additional certificates repeatedly, forcing the server to store them indefinitely. The issue was fixed by removing the added extra certs if the message is rejected, using the same method as when the context is configured to not do caching at all. FIPS impact: no As the CMP code lives outside the FIPS module boundary, no FIPS modules are affected by this CVE.

WID-SEC-W-2026-3005 — OpenSSL: Mehrere Schwachstellen

2026-10-02T13:05:32.187886+00:00

Ein Angreifer kann mehrere Schwachstellen in OpenSSL ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren oder offenzulegen oder einen Denial-of-Service-Zustand herbeizuführen.