{
  "threat_severity" : "Important",
  "public_date" : "2026-04-08T20:49:41Z",
  "bugzilla" : {
    "description" : "cryptography: Cryptography: Buffer overflow via non-contiguous buffer in API",
    "id" : "2456735",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2456735"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.3",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L",
    "status" : "verified"
  },
  "cwe" : "CWE-131",
  "details" : [ "cryptography is a package designed to expose cryptographic primitives and recipes to Python developers. From 45.0.0 to before 46.0.7, if a non-contiguous buffer was passed to APIs which accepted Python buffers (e.g. Hash.update()), this could lead to buffer overflows. This vulnerability is fixed in 46.0.7.", "A flaw was found in the cryptography library. This vulnerability occurs when a non-contiguous buffer is passed to certain application programming interfaces (APIs) that accept Python buffers, such as Hash.update(). A remote attacker could exploit this to cause a buffer overflow, potentially leading to a denial of service." ],
  "statement" : "In default configurations Red Hat products isolate service processes from total system access. Should an attacker be able to exploit this vulnerability their impact will be limited to that service account and they will not have access to the broader system.",
  "affected_release" : [ {
    "product_name" : "Red Hat Discovery 2",
    "release_date" : "2026-05-21T00:00:00Z",
    "advisory" : "RHSA-2026:20338",
    "cpe" : "cpe:/a:redhat:discovery:2::el9",
    "package" : "discovery/discovery-server-rhel9:1779395228"
  }, {
    "product_name" : "Red Hat Hardened Images",
    "release_date" : "2026-04-09T00:00:00Z",
    "advisory" : "RHSA-2026:7295",
    "cpe" : "cpe:/a:redhat:hummingbird:1",
    "package" : "python-cryptography-main-46.0.7-1.hum1"
  }, {
    "product_name" : "Red Hat Quay 3.16",
    "release_date" : "2026-05-19T00:00:00Z",
    "advisory" : "RHSA-2026:19375",
    "cpe" : "cpe:/a:redhat:quay:3.16::el9",
    "package" : "quay/quay-rhel9:1779204086"
  } ],
  "package_state" : [ {
    "product_name" : "Lightspeed Core",
    "fix_state" : "Affected",
    "package_name" : "openshift-lightspeed-tech-preview/lightspeed-rag-tool-rhel9",
    "cpe" : "cpe:/a:redhat:lightspeed_core"
  }, {
    "product_name" : "Lightspeed Core",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/lightspeed-stack",
    "cpe" : "cpe:/a:redhat:lightspeed_core"
  }, {
    "product_name" : "Migration Toolkit for Applications 8",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/art-images",
    "cpe" : "cpe:/a:redhat:migration_toolkit_applications:8"
  }, {
    "product_name" : "OpenShift Lightspeed",
    "fix_state" : "Not affected",
    "package_name" : "openshift-lightspeed/lightspeed-ocp-rag-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_lightspeed"
  }, {
    "product_name" : "OpenShift Lightspeed",
    "fix_state" : "Not affected",
    "package_name" : "openshift-lightspeed/lightspeed-service-api-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_lightspeed"
  }, {
    "product_name" : "Red Hat AI Inference Server",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/rhaiis-cpu-ubi9-3-3",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3"
  }, {
    "product_name" : "Red Hat AI Inference Server",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/rhaiis-cuda-ubi9-3-3",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3"
  }, {
    "product_name" : "Red Hat AI Inference Server",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/rhaiis-rocm-ubi9-3-3",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3"
  }, {
    "product_name" : "Red Hat AI Inference Server",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/rhaiis-tpu-ubi9-3-3",
    "cpe" : "cpe:/a:redhat:ai_inference_server:3"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Not affected",
    "package_name" : "ansible-automation-platform-24/lightspeed-rhel8-operator",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "ansible-automation-platform-25/lightspeed-chatbot-rhel8",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Not affected",
    "package_name" : "ansible-automation-platform-26/lightspeed-rhel9-operator",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "automation-controller",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/automation-reports",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/controller-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/eda-controller-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-supported-rhel8",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-supported-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/gateway-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/hub-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Not affected",
    "package_name" : "redhat-user-workloads/lightspeed-chatbot-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/mcp-tools-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/metrics-service-rhel9",
    "cpe" : "cpe:/a:redhat:ansible_automation_platform:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform Ansible Core 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-minimal-ansible-core-2-19-rhel-8-tech-preview",
    "cpe" : "cpe:/a:redhat:ansible_core:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform Ansible Core 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-minimal-ansible-core-2-19-rhel-9-tech-preview",
    "cpe" : "cpe:/a:redhat:ansible_core:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform Ansible Core 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-minimal-ansible-core-2-20-rhel-8-tech-preview",
    "cpe" : "cpe:/a:redhat:ansible_core:2"
  }, {
    "product_name" : "Red Hat Ansible Automation Platform Ansible Core 2",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/ee-minimal-ansible-core-2-20-rhel-9-tech-preview",
    "cpe" : "cpe:/a:redhat:ansible_core:2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Affected",
    "package_name" : "fence-agents",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "fix_state" : "Affected",
    "package_name" : "fence-agents",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/bootc-cuda-aws-3-3",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/bootc-cuda-azure-3-3",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/bootc-cuda-gcp-3-3",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/bootc-rocm-azure-3-3",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "rhelai3/bootc-cuda-rhel9",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat Enterprise Linux AI (RHEL AI) 3",
    "fix_state" : "Affected",
    "package_name" : "rhelai3/bootc-rocm-rhel9",
    "cpe" : "cpe:/a:redhat:enterprise_linux_ai:3"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-feature-server-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Not affected",
    "package_name" : "rhoai/odh-kserve-agent-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Not affected",
    "package_name" : "rhoai/odh-kserve-controller-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Not affected",
    "package_name" : "rhoai/odh-kserve-router-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-kserve-storage-initializer-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-llama-stack-core-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-mlflow-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-datascience-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-minimal-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-pytorch-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-pytorch-llmcompressor-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-pytorch-rocm-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-tensorflow-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-pipeline-runtime-tensorflow-rocm-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-training-cuda128-torch29-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-trustyai-garak-lls-provider-dsp-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-trustyai-nemo-guardrails-server-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-vllm-gaudi-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-codeserver-datascience-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-datascience-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-minimal-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-minimal-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-minimal-rocm-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-pytorch-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-pytorch-llmcompressor-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-pytorch-rocm-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-tensorflow-cuda-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-tensorflow-rocm-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat OpenShift AI (RHOAI)",
    "fix_state" : "Affected",
    "package_name" : "rhoai/odh-workbench-jupyter-trustyai-cpu-py312-rhel9",
    "cpe" : "cpe:/a:redhat:openshift_ai"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-12",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Will not fix",
    "package_name" : "redhat-user-workloads/quay-quay-v3-13",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-14",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-15",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-16",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-17",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Quay 3",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/quay-quay-v3-9",
    "cpe" : "cpe:/a:redhat:quay:3"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/iop-advisor-engine",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/iop-host-inventory-sat-6-18",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "redhat-user-workloads/iop-vmaas-sat-6-18",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Red Hat Satellite 6",
    "fix_state" : "Affected",
    "package_name" : "satellite/foreman-mcp-server-rhel9",
    "cpe" : "cpe:/a:redhat:satellite:6"
  }, {
    "product_name" : "Red Hat Trusted Artifact Signer",
    "fix_state" : "Affected",
    "package_name" : "securesign/model-transparency",
    "cpe" : "cpe:/a:redhat:trusted_artifact_signer:1"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2026-39892\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-39892\nhttp://www.openwall.com/lists/oss-security/2026/04/08/12\nhttps://github.com/pyca/cryptography/commit/622d672e429a7cff836a23c5903683dbec1901f5\nhttps://github.com/pyca/cryptography/security/advisories/GHSA-p423-j2cm-9vmq" ],
  "name" : "CVE-2026-39892",
  "mitigation" : {
    "value" : "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
    "lang" : "en:us"
  },
  "csaw" : false
}