CentOS Linux 8.5 [TuxCare] Security Update: openssl / openssl-devel / openssl-libs / openssl-perl / etc Multiple Vulnerabilities (CENTOS8.5:CLSA-2026:1790933161)

The CentOS Linux 8.5 host has packages installed that are affected by multiple vulnerabilities as referenced in the TuxCare CENTOS8.5:CLSA-2026:1790933161 advisory. - Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when...

CVE-2026-103884

A flaw was found in the X.509 client certificate authenticator of Keycloak. When CRL Distribution Point checking is enabled, the server fails to properly validate the file paths provided in a client certificate. An attacker can provide a specially crafted certificate that causes the server to...

CVE-2026-103884

A flaw was found in the X.509 client certificate authenticator of Keycloak. When CRL Distribution Point checking is enabled, the server fails to properly validate the file paths provided in a client certificate. An attacker can provide a specially crafted certificate that causes the server to...

EUVD-2026-90972

A flaw was found in the X.509 client certificate authenticator of Keycloak. When CRL Distribution Point checking is enabled, the server fails to properly validate the file paths provided in a client certificate. An attacker can provide a specially crafted certificate that causes the server to...

CVE-2026-103884

A flaw exists in the X.509 client certificate authenticator of Keycloak . When CRL Distribution Point checking is enabled, the server fails to properly validate file paths provided within a client certificate. This path traversal vulnerability allows an attacker to provide a specially crafted cer...

openssl: openssl: Denial of Service via excessive memory allocation in CRL distribution point processing

A flaw was found in OpenSSL. A remote attacker can cause a Denial of Service DoS by presenting a specially crafted certificate during a Transport Layer Security TLS handshake. When OpenSSL processes and caches certificate extensions containing numerous Certificate Revocation List CRL distribution...

openssl: openssl: Denial of Service via excessive memory allocation in CRL distribution point processing

A flaw was found in OpenSSL. A remote attacker can cause a Denial of Service DoS by presenting a specially crafted certificate during a Transport Layer Security TLS handshake. When OpenSSL processes and caches certificate extensions containing numerous Certificate Revocation List CRL distribution...

AZL-105870 CVE-2026-35189 affecting package rust 1.96.1-2

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

AZL-105903 CVE-2026-35189 affecting package shim-unsigned-x64 16.1-2

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

DEBIAN-CVE-2026-35189

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

CVE-2026-35189

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

ALPINE-CVE-2026-35189

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

AZL-105720 CVE-2026-35189 affecting package qemu 10.1.0-1

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

EUVD-2026-89001

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

CVE-2026-35189 Excessive Memory Allocation in Relative CRLDP Processing

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

CVE-2026-35189: Allocation of Resources Without Limits or Throttling

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

Linux Distros Unpatched Vulnerability : CVE-2026-35189

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions...

Excessive Memory Allocation in Relative CRLDP Processing

Issue summary: A certificate with many nameRelativeToCRLIssuer CRL distribution points causes disproportionate heap growth when OpenSSL caches X.509 extensions. Impact summary: Receiving a crafted certificate from a malicious peer can lead to significant memory pressure and possible Denial of...

Lemur: Crafted CRL/OCSP URLs in uploaded certificates lead to post-authentication SSRF

Summary When verifying an uploaded certificate, lemur/certificates/verify.py extracts the CRL Distribution Point URL and the OCSP responder URL directly from the certificate's extensions and issues outbound requests to those URLs without scheme restriction or destination allow-listing. An...

PYSEC-2026-2586 Lemur: Crafted CRL/OCSP URLs in uploaded certificates lead to post-authentication SSRF

Summary When verifying an uploaded certificate, lemur/certificates/verify.py extracts the CRL Distribution Point URL and the OCSP responder URL directly from the certificate's extensions and issues outbound requests to those URLs without scheme restriction or destination allow-listing. An...