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-2026-1778583971 Fix CVE(s): CVE-2026-28387, CVE-2026-28388

SECURITY UPDATE: A 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-2026-1777999127 Fix CVE(s): CVE-2026-28387, CVE-2026-28388, CVE-2026-28389, CVE-2026-28390

SECURITY UPDATE: fix UAF/double-free in DANE client by using X509free for dane-mcert - debian/patches/CVE-2026-28387.patch: fix UAF/double-free in DANE client by using X509free for dane-mcert - CVE-2026-28387 SECURITY UPDATE: NULL check delta-crlnumber before ASN1INTEGERcmp in checkdeltabase -...

Multiple vulnerabilities impact AIX due to OpenSSL

IBM SECURITY ADVISORY First Issued: Mon May 4 15:13:40 CDT 2026 The most recent version of this document is available here: https://aix.software.ibm.com/aix/efixes/security/openssladvisory47.asc Security Bulletin: Multiple vulnerabilities impact AIX due to OpenSSL...

OESA-2026-2191 compat-openssl11 security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS12 file. Impact summary: An...

OESA-2026-2190 compat-openssl11 security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS12 file. Impact summary: An...

OESA-2026-2189 compat-openssl11 security update

OpenSSL is a robust, commercial-grade, and full-featured toolkit for the Transport Layer Security TLS and Secure Sockets Layer SSL protocols. Security Fixes: Issue summary: An invalid or NULL pointer dereference can happen in an application processing a malformed PKCS12 file. Impact summary: An...

CLSA-2026-1777567502 openssl: Fix of CVE-2026-28387

CVE-2026-28387: fix use-after-free / double-free in danematch by releasing the previously stored dane-mcert with X509free instead of OPENSSLfree; the slot is reference-bumped via X509upref so the matching free is X509free...

CLSA-2026-1777542789 openssl: Fix of CVE-2026-28387

CVE-2026-28387: fix use-after-free / double-free in danematch by releasing the previously stored dane-mcert with X509free instead of OPENSSLfree; the slot is reference-bumped via X509upref so the matching free is X509free...

Important: edk2

Issue Overview: Potential use-after-free in DANE client code CVE-2026-28387 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 NU...

CLSA-2026-1777455447 openssl: Fix of CVE-2026-28387

CVE-2026-28387: fix use-after-free / double-free in danematch by releasing the previously stored dane-mcert with X509free instead of OPENSSLfree; the slot is reference-bumped via X509upref so the matching free is X509free...

JLSEC-2026-272

Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of potential consequenc...

OESA-2026-2045 openssl security update

Security Fixes: Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of...

OESA-2026-2044 openssl security update

Security Fixes: Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of...

OESA-2026-2043 openssl security update

Security Fixes: Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of...

OESA-2026-2042 openssl security update

Security Fixes: Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of...

OESA-2026-2041 openssl security update

Security Fixes: Issue summary: An uncommon configuration of clients performing DANE TLSA-based server authentication, when paired with uncommon server DANE TLSA records, may result in a use-after-free and/or double-free on the client side. Impact summary: A use after free can have a range of...

SUSE SLES15 Security Update : openssl-1_1 (SUSE-SU-2026:1577-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1577-1 advisory. - CVE-2026-28387: Potential use-after-free in DANE client code bsc1260441. - CVE-2026-28388: NULL Pointer Dereference When Processi...

SUSE SLED15 / SLES15 Security Update : openssl-3 (SUSE-SU-2026:1375-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:1375-1 advisory. Security issues fixed: - CVE-2026-28387: Potential use-after-free in DANE client code bsc1260441. -...

SUSE-SU-2026:1386-1 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...