GHSA-RP2P-6CMP-JXJ9 Microsoft Security Advisory CVE-2026-57108 – .NET Denial of Service Vulnerability

Executive summary Microsoft is releasing this security advisory to provide information about a vulnerability in the .NET runtime cryptography layer CryptoNativeGetX509NameInfo. This advisory also provides guidance on what developers can do to update their applications to remove this vulnerability...

crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries

A flaw was found in the crypto/x509 package of golang. This vulnerability allows a remote attacker to cause a Denial of Service DoS by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name SAN entries. The certificate verification process, specifical...

crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

A flaw was found in Go's crypto/x509 package. A remote attacker could exploit this by presenting a specially crafted certificate chain containing a large number of policy mappings. This inefficient validation process consumes excessive resources, which can lead to a denial of service DoS for...

crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries

A flaw was found in the crypto/x509 package of golang. This vulnerability allows a remote attacker to cause a Denial of Service DoS by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name SAN entries. The certificate verification process, specifical...

SUSE SLES16 Security Update : go1.25-openssl (SUSE-SU-2026:22638-1)

The remote SUSE Linux SLES16 / SLESSAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:22638-1 advisory. This update for go1.25-openssl fixes the following issues - Update to version go1.25.12 bsc1244485. - CVE-2025-61732: cmd/cgo:...

crypto/x509: Incorrect enforcement of email constraints in crypto/x509

A certificate validation flaw has been discovered in the golang crypto/x509 module. When verifying a certificate chain which contains a certificate containing multiple email address constraints which share common local portions but different domain portions, these constraints will not be properly...

crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate

A flaw was found in golang. A remote attacker could exploit this vulnerability by providing a specially crafted certificate during the error string construction process within the HostnameError.Error function. This flaw, caused by unbounded string concatenation, leads to excessive resource...

kernel security, bug fix, and enhancement update

6.12.0-211.34.1 - Add new Oracle Linux Driver Signing key 1 certificate Orabug: 37985782 - Disable UKI signing Orabug: 36571828 - Update Oracle Linux certificates Kevin Lyons - Disable signing for aarch64 Ilya Okomin - Oracle Linux RHCK Module Signing Key was added to the kernel trusted keys list...

openSUSE 16 Security Update : go1.25-openssl (openSUSE-SU-2026:21319-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21319-1 advisory. This update for go1.25-openssl fixes the following issues - Update to version go1.25.12 bsc1244485. - CVE-2025-61732: cmd/cgo: discrepancy betwe...

Security update for go1.26-openssl

This update for go1.26-openssl fixes the following issues Update to version go1.26.5 bsc1255111. CVE-2026-27145: crypto/x509: split candidate hostname only once bsc1267450. CVE-2026-39822: os: Root escape via symlink plus trailing slash bsc1271014. CVE-2026-42504: mime: quadratic complexity in...

Security update for go1.25-openssl

This update for go1.25-openssl fixes the following issues Update to version go1.25.12 bsc1244485. CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. CVE-2026-27139: os: FileInfo can escape from a Root bsc1259268. CVE-2026-27142: html/template: URLs in meta content...

SUSE-SU-2026:3046-1 Security update for go1.25-openssl

This update for go1.25-openssl fixes the following issues - Update to version go1.25.12 bsc1244485. - CVE-2026-25679: net/url: reject IPv6 literal not at start of host bsc1259264. - CVE-2026-27139: os: FileInfo can escape from a Root bsc1259268. - CVE-2026-27142: html/template: URLs in meta conte...

RLSA-2026:39573 Important: yggdrasil security update

yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate child "worker" process, exchanging data with its worker processes through a D-Bus message broker. Security Fixes: net: golang: Go net package: Denial of Service vi...

go-toolset:rhel8 security, bug fix, and enhancement update

An update is available for golang, module.golang, module.delve, delve. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Go Toolset provides the Go programming...

Security update for python-cryptography

This update for python-cryptography fixes the following issues: CVE-2026-41676: openssl: Deriver:derive and PkeyCtxRef:derive can overflow short buffers on OpenSSL 1.1.1 bsc1270208. CVE-2026-41677: openssl: out-of-bounds read in PEM password callback when returning an oversized length bsc1270620...

RHEL 10 : yggdrasil (RHSA-2026:39573)

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:39573 advisory. yggdrasil is a system daemon that subscribes to topics on an MQTT broker and routes any data received on the topics to an appropriate chil...

RockyLinux 10 : yggdrasil (RLSA-2026:39573)

The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:39573 advisory. net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME CVE-2026-33811 golang.org/x/net/idna: golang:...

JLSEC-2026-685 In function MatchDomainName(), input param str is treated as a NULL terminated string despite being...

In function MatchDomainName, input param str is treated as a NULL terminated string despite being user provided and unchecked. Specifically, the function X509checkhost takes in a pointer and length to check against, with no requirements that it be NULL terminated. If a caller was attempting to do...

JLSEC-2026-755 X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name

X.509 name constraint bypass via the Subject Common Name when treated as a DNS-type name. A certificate whose Subject CN violates an issuing CA's DNS name constraints could be accepted...

JLSEC-2026-742 Partial-chain certificate verification may accept chains that terminate at a peer-supplied,...

Partial-chain certificate verification may accept chains that terminate at a peer-supplied, untrusted intermediate certificate rather than a trusted anchor. An attacker could present a chain that ends at an intermediate they control and have it accepted as valid. This affects the OpenSSL...