openssl: Heap Use-After-Free in OpenSSL PKCS7_verify()

A flaw was found in OpenSSL. When processing a specially crafted PKCS7 or S/MIME Secure/Multipurpose Internet Mail Extensions signed message, a heap use-after-free vulnerability in the PKCS7verify function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an emp...

EUVD-2026-90849

boksksllogsd accepts a checksum algorithm name in the MD field of an authenticated KSL start message. Affected releases verify that OpenSSL recognizes the digest name but do not verify that the value fits in a fixed 16-byte checksum context field before copying it. An authenticated KSL client can...

USN-8861-1: OpenSSL vulnerabilities

It was discovered that OpenSSL had an inefficient algorithm in its QUIC stream reassembly implementation. A remote attacker could possibly use this issue to cause OpenSSL to use excessive CPU resources, leading to a denial of service. CVE-2026-42772 It was discovered that OpenSSL did not properly...

USN-8861-1 openssl vulnerabilities

It was discovered that OpenSSL had an inefficient algorithm in its QUIC stream reassembly implementation. A remote attacker could possibly use this issue to cause OpenSSL to use excessive CPU resources, leading to a denial of service. CVE-2026-42772 It was discovered that OpenSSL did not properly...

BIT-TOMCAT-2026-73581 Apache Tomcat: OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore

Improper Check for Certificate Revocation vulnerability in Apache Tomcat. Both the OpenSSL and OpenSSL-FFM TLS implementations ignore CRLs when certificate uses a keystore. This issue affects Apache Tomcat: from 11.0.0 through 11.0.25, from 10.1.0 through 10.1.59, from 9.0.0 through 9.0.121. The...

BIT-PHP-MIN-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

BIT-PHP-MIN-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

phpopensslmatcheswildcardname in ext/openssl/xpssl.c underflows the length argument passed to memchr when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP...

BIT-PHP-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

BIT-PHP-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

phpopensslmatcheswildcardname in ext/openssl/xpssl.c underflows the length argument passed to memchr when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP...

BIT-LIBPHP-2026-91769 TLS Hostname Verification Falls Back to CN After SAN Mismatch

PHP's OpenSSL stream peer verification checks the certificate's subjectAltName entries first and, whenever no entry matches, falls back to the Common Name. RFC 6125 requires the CN to be ignored once the certificate presents any service identity, so a certificate carrying a non-matching DNS SAN w...

BIT-LIBPHP-2026-91767 Heap-buffer-overflow in php_openssl_matches_wildcard_name on crafted server cert wildcard CN

phpopensslmatcheswildcardname in ext/openssl/xpssl.c underflows the length argument passed to memchr when a TLS server certificate presents a wildcard name whose literal characters are together longer than the hostname being verified. A malicious server presenting such a certificate makes the PHP...

Rocky Linux 9 [CIQ] Security Update: openssl / openssl-debuginfo / openssl-debugsource / openssl-devel / etc (crlsa-2025_21255)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202521255 advisory. openssl: Out-of-bounds read & write in RFC 3211 KEK Unwrap CVE-2025-9230 Tenable has extracted the preceding description block directly from the CIQ security...

AlmaLinux 9.2 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2024:1735311149)

The AlmaLinux 9.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2024:1735311149 advisory. - Issue summary: Some non-default TLS server configurations can cause unbounded memory growth when processing TLSv1.3 sessions Impac...

Rocky Linux 9 [CIQ] Security Update: compat-openssl11 / compat-openssl11-debuginfo / etc (crlsa-2026_19187)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-202619187 advisory. openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS12 processing CVE-2025-69419 Tenable has extracted the preceding description block...

CentOS Linux 8 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc (CENTOS-STREAM8:CLSA-2026:1771003612)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2026:1771003612 advisory. - Issue summary: Processing a malformed PKCS12 file can trigger a NULL pointer dereference in the PKCS12itemdecryptd2iex function. Impact...

Rocky Linux 9 [CIQ] Security Update: compat-openssl11 / compat-openssl11-debuginfo / etc (crlsa-2025_7937)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20257937 advisory. openssl: X.400 address type confusion in X.509 GeneralName CVE-2023-0286 Tenable has extracted the preceding description block directly from the CIQ security...

AlmaLinux 9.6 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl (ALMALINUX9.6:CLSA-2026:1788860468)

The AlmaLinux 9.6 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.6:CLSA-2026:1788860468 advisory. - Issue summary: When a delta CRL that contains a Delta CRL Indicator extension is processed a NULL pointer dereference might happen if the...

Rocky Linux 9 [CIQ] Security Update: compat-openssl11 / compat-openssl11-debuginfo / etc (crlsa-2026_4472)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20264472 advisory. openssl: OpenSSL: Arbitrary code execution due to out-of-bounds write in PKCS12 processing CVE-2025-69419 Tenable has extracted the preceding description block...

CentOS Linux 8 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc (CENTOS-STREAM8:CLSA-2025:1759865876)

The CentOS Linux 8 host has packages installed that are affected by a vulnerability as referenced in the TuxCare CENTOS- STREAM8:CLSA-2025:1759865876 advisory. Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. %NASLMINLEV...

Rocky Linux 9 [CIQ] Security Update: grafana-pcp / grafana-pcp-debuginfo / grafana-pcp-debugsource (crlsa-2024_2569)

The Rocky Linux 9 host has packages installed that are affected by a vulnerability as referenced in the CIQ crlsa-20242569 advisory. grafana-pcp: golang-fips/openssl: Memory leaks in code encrypting and decrypting RSA payloads CVE-2024-1394 Tenable has extracted the preceding description block...