{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle 9.2 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.18 for RHEL 9 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.21 for RHEL 9 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.18 for RHEL 8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle 9.2 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.20 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.20 for RHEL 8 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.20 for RHEL 8 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.20 for RHEL 9 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle 9.2 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.21 for RHEL 8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux Server - AUS 8.6 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.20 for RHEL 9 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.21 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.2 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 9 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.20 for RHEL 9 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.21 for RHEL 9 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.21 for RHEL 8 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.19 for RHEL 9 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.18 for RHEL 9 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.19 for RHEL 8 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.2 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux Server - AUS 8.4 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for Real Time for NFV 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.4 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.20 for RHEL 9 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.20 for RHEL 8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.18 for RHEL 9 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux Server - AUS 9.2 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.18 for RHEL 8 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.21 for RHEL 8 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for ARM 64 - 4 years of updates 9.2 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 8 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.19 for RHEL 9 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for ARM 64 4.21 for RHEL 9 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.19 for RHEL 9 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.18 for RHEL 9 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for IBM Z and LinuxONE 4.21 for RHEL 9 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for Real Time 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 9.2 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for ARM 64 10 aarch64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for IBM z Systems - 4 years of updates 9.2 s390x",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.19 for RHEL 8 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform for Power 4.18 for RHEL 8 ppc64le",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.18 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat Enterprise Linux for x86_64 - Extended Life Cycle 8.10 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    },
    {
      "description": "Red Hat OpenShift Container Platform 4.19 for RHEL 8 x86_64",
      "product": {
        "name": "N/A",
        "vendor": {
          "name": "Red Hat",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": null,
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2026-4878",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-4878"
    },
    {
      "name": "CVE-2026-31685",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31685"
    },
    {
      "name": "CVE-2026-46227",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46227"
    },
    {
      "name": "CVE-2026-31787",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31787"
    },
    {
      "name": "CVE-2026-43163",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43163"
    },
    {
      "name": "CVE-2026-31786",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31786"
    },
    {
      "name": "CVE-2026-23191",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23191"
    },
    {
      "name": "CVE-2025-68724",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-68724"
    },
    {
      "name": "CVE-2026-46243",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46243"
    },
    {
      "name": "CVE-2026-31669",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31669"
    },
    {
      "name": "CVE-2024-41073",
      "url": "https://www.cve.org/CVERecord?id=CVE-2024-41073"
    },
    {
      "name": "CVE-2026-23216",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23216"
    },
    {
      "name": "CVE-2026-22990",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-22990"
    },
    {
      "name": "CVE-2026-39979",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-39979"
    },
    {
      "name": "CVE-2025-71089",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-71089"
    },
    {
      "name": "CVE-2026-35385",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-35385"
    },
    {
      "name": "CVE-2026-43158",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43158"
    },
    {
      "name": "CVE-2026-23243",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23243"
    },
    {
      "name": "CVE-2026-41326",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41326"
    },
    {
      "name": "CVE-2026-23001",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23001"
    },
    {
      "name": "CVE-2026-40164",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-40164"
    },
    {
      "name": "CVE-2025-40158",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40158"
    },
    {
      "name": "CVE-2026-23392",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23392"
    },
    {
      "name": "CVE-2026-46125",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46125"
    },
    {
      "name": "CVE-2026-46152",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46152"
    },
    {
      "name": "CVE-2025-40135",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40135"
    },
    {
      "name": "CVE-2025-71116",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-71116"
    },
    {
      "name": "CVE-2026-31532",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-31532"
    },
    {
      "name": "CVE-2026-43190",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43190"
    },
    {
      "name": "CVE-2026-46056",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-46056"
    },
    {
      "name": "CVE-2026-23455",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23455"
    },
    {
      "name": "CVE-2025-40170",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40170"
    },
    {
      "name": "CVE-2025-68366",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-68366"
    },
    {
      "name": "CVE-2026-43110",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43110"
    },
    {
      "name": "CVE-2026-41035",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-41035"
    },
    {
      "name": "CVE-2026-43303",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43303"
    },
    {
      "name": "CVE-2026-22984",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-22984"
    },
    {
      "name": "CVE-2026-43037",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43037"
    },
    {
      "name": "CVE-2025-21858",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-21858"
    },
    {
      "name": "CVE-2023-53372",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-53372"
    },
    {
      "name": "CVE-2026-23097",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23097"
    },
    {
      "name": "CVE-2026-43116",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43116"
    },
    {
      "name": "CVE-2026-43329",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43329"
    },
    {
      "name": "CVE-2026-43038",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-43038"
    },
    {
      "name": "CVE-2025-68800",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-68800"
    }
  ],
  "initial_release_date": "2026-06-19T00:00:00",
  "last_revision_date": "2026-06-19T00:00:00",
  "links": [],
  "reference": "CERTFR-2026-AVI-0781",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2026-06-19T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service \u00e0 distance"
    },
    {
      "description": "Ex\u00e9cution de code arbitraire \u00e0 distance"
    },
    {
      "description": "Atteinte \u00e0 l\u0027int\u00e9grit\u00e9 des donn\u00e9es"
    },
    {
      "description": "Non sp\u00e9cifi\u00e9 par l\u0027\u00e9diteur"
    },
    {
      "description": "Contournement de la politique de s\u00e9curit\u00e9"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans le noyau Linux de Red Hat. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une ex\u00e9cution de code arbitraire \u00e0 distance, une \u00e9l\u00e9vation de privil\u00e8ges et un d\u00e9ni de service \u00e0 distance.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans le noyau Linux de Red Hat",
  "vendor_advisories": [
    {
      "published_at": "2026-06-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26462",
      "url": "https://access.redhat.com/errata/RHSA-2026:26462"
    },
    {
      "published_at": "2026-06-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26515",
      "url": "https://access.redhat.com/errata/RHSA-2026:26515"
    },
    {
      "published_at": "2026-06-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:25181",
      "url": "https://access.redhat.com/errata/RHSA-2026:25181"
    },
    {
      "published_at": "2026-06-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26570",
      "url": "https://access.redhat.com/errata/RHSA-2026:26570"
    },
    {
      "published_at": "2026-06-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:25534",
      "url": "https://access.redhat.com/errata/RHSA-2026:25534"
    },
    {
      "published_at": "2026-06-12",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:25533",
      "url": "https://access.redhat.com/errata/RHSA-2026:25533"
    },
    {
      "published_at": "2026-06-16",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26428",
      "url": "https://access.redhat.com/errata/RHSA-2026:26428"
    },
    {
      "published_at": "2026-06-17",
      "title": "Bulletin de s\u00e9curit\u00e9 Red Hat RHSA-2026:26535",
      "url": "https://access.redhat.com/errata/RHSA-2026:26535"
    },
    {
      "published_at": "2026-06-17",
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          "defaultStatus": "affected",
          "product": "Red Hat OpenShift Container Platform 4",
          "vendor": "Red Hat"
        }
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      "value": "Kata Containers is an open source project focusing on a standard implementation of lightweight Virtual Machines (VMs) that perform like containers. From v3.4.0 to v3.28.0, an oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs. This vulnerability is fixed in v3.29.0."
    }
  ],
  "id": "CVE-2026-41326",
  "lastModified": "2026-06-30T03:19:26.100",
  "metrics": {
    "cvssMetricV31": [
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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/kata-containers/kata-containers"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260422180503-1b9e49eb2763"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-41326"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-61"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-04T19:32:20Z",
    "nvd_published_at": "2026-04-24T19:17:12Z",
    "severity": "HIGH"
  },
  "details": "### Summary\nAn oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs.\n\n### Details\nHere is the policy that covers CopyFile requests.\n```\nCopyFileRequest if {\n    print(\"CopyFileRequest: input.path =\", input.path)\n        \n    check_directory_traversal(input.path)\n        \n    some regex1 in policy_data.request_defaults.CopyFileRequest\n    regex2 := replace(regex1, \"$(sfprefix)\", policy_data.common.sfprefix)\n    regex3 := replace(regex2, \"$(cpath)\", policy_data.common.cpath)\n    regex4 := replace(regex3, \"$(bundle-id)\", \"[a-z0-9]{64}\")\n    print(\"CopyFileRequest: regex4 =\", regex4)\n    \n    regex.match(regex4, input.path)\n      \n    print(\"CopyFileRequest: true\")\n}\n```\nThis checks that files are being copied to `policy_data.common.cpath`, which is typically set to `/run/kata-containers/shared/containers`. In other words, you\u0027re allowed to copy files to anywhere inside the shared dir.\n\nFor reference, here is the CopyFile message. Note that none of the other fields are check in the policy.\n```\nmessage CopyFileRequest {\n\t// Path is the destination file in the guest. It must be absolute,\n\t// canonical and below /run.\n\tstring path = 1;\n\t// FileSize is the expected file size, for security reasons write operations\n\t// are made in a temporary file, once it has the expected size, it\u0027s moved\n\t// to the destination path.\n\tint64 file_size = 2;\n\t// FileMode is the file mode.\n\tuint32 file_mode = 3;\n\t// DirMode is the mode for the parent directories of destination path.\n\tuint32 dir_mode = 4;\n\t// Uid is the numeric user id.\n\tint32 uid = 5;\n\t// Gid is the numeric group id.\n\tint32 gid = 6;\n\t// Offset for the next write operation.\n\tint64 offset = 7;\n\t// Data to write in the destination file.\n\tbytes data = 8;\n}\n```\n\nIn addition to copying files directly, the Kata Agent supports creating symlinks via the CopyFile API. In this case the `path` is the symlink name and the `data` field contains the symlink target. Given that the policy only checks the path, an attacker can craft a CopyFile request that results in a symlink going from any location into the shared dir.\n\n### PoC\nThe above primitive can be used to to write arbitrary data into container images (pulled in the guest or otherwise). A couple steps are required.\n\nFirst, identify some target path in the guest image. This could be a binary that will be called by the workload. You could also experiment with overwriting other stuff.\n\nCreate a symlink from this binary to the shared dir. The path/link name should be in the shared dir and the data/target should point to the path of the target file inside the container image in the guest fs.\n\nCreate a second CopyFile request to copy your data from the host into the symlink you just created in the shared dir. This will then be propagated into the image. You may want to restart the container to ensure that your new binary is invoked.\n\n### Impact\nAnyone who is using the upstream `genpolicy` implementation and expects it to prevent host access to container images is vulnerable This includes Confidential Containers workloads where the trust model explicitly forbids this type of access. If you have your own policy implementation you may or may not be vulnerable. If you do not care about protecting the image from the host (e.g. you are using unprotected host pull), you are not vulnerable.\n\nThis was individually discovered and reported by\n\n- @calonso-nv \n- @fikriwahab\n- @kodareef5",
  "id": "GHSA-q49m-57vm-c8cc",
  "modified": "2026-05-14T20:49:51Z",
  "published": "2026-05-04T19:32:20Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41326"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kata-containers/kata-containers/commit/1b9e49eb2763aa6ea6a99b276d3ff5e2c7f658f2"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kata-containers/kata-containers"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/05/13/2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Kata Container has CopyFile Policy Subversion via Symlinks"
}

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        "id": "CWE-1220",
        "name": "Insufficient Granularity of Access Control"
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      "discovery_date": "2026-04-22T19:00:36.343000+00:00",
      "ids": [
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          "system_name": "Red Hat Bugzilla ID",
          "text": "2460859"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in Kata Containers.  An oversight in the CopyFile policy (and perhaps the CopyFile handler) allows untrusted hosts to write to arbitrary locations inside the guest workload image. This can be used to overwrite binaries inside the guest and exfiltrate data from containers; even those running inside CVMs.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kata-containers: Arbitrary file write inside guest image via CopyFile policy",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This flaw in the CopyFile policy of Kata Containers allows untrusted hosts to write to arbitrary locations within a guest workload image. This could lead to the overwriting of binaries inside the guest and the exfiltration of data from containers, including those running within Confidential Virtual Machines (CVMs).",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-41326"
        },
        {
          "category": "external",
          "summary": "RHBZ#2460859",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2460859"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-41326",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-41326"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-41326",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41326"
        },
        {
          "category": "external",
          "summary": "https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc",
          "url": "https://github.com/kata-containers/kata-containers/security/advisories/GHSA-q49m-57vm-c8cc"
        }
      ],
      "release_date": "2026-04-22T19:01:25.112000+00:00",
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2026-06-17T09:38:43+00:00",
          "details": "For OpenShift Container Platform 4.19 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:12ba901e472743bd79695772e65a451ac80ac29200cc06076471c42ed0956675\n\n      (For s390x architecture)\n      The image digest is sha256:33b55b92bbc4790ac37d4c7b11d1931a2240510799c38c1eca5aeb56aa7e3340\n\n      (For ppc64le architecture)\n      The image digest is sha256:3f3b589bf1ba5601644293d48f27ebf26cce0af703edde58001cf88f25066808\n\n      (For aarch64 architecture)\n      The image digest is sha256:sha256:c5b6085ebfabad3ca4a7bcf4c0a86bb7c1c2454333a3a75859eb0e7b85a609ee\n\nAll OpenShift Container Platform 4.19 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202606100451-0"
          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:25200"
        },
        {
          "category": "workaround",
          "details": "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.",
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        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
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            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-x86_64-4.19.9.6.202606100451-0"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "kata-containers: Arbitrary file write inside guest image via CopyFile policy"
    },
    {
      "cve": "CVE-2026-43037",
      "cwe": {
        "id": "CWE-843",
        "name": "Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)"
      },
      "discovery_date": "2026-05-01T00:00:00+00:00",
      "ids": [
        {
          "system_name": "Red Hat Bugzilla ID",
          "text": "2464351"
        }
      ],
      "notes": [
        {
          "category": "description",
          "text": "A flaw was found in the Linux kernel\u0027s IPv6 tunnel implementation. A remote attacker could exploit this flaw by sending malicious ICMPv6 error messages to cause a stack-based buffer overflow in the kernel\u0027s IPv4-over-IPv6 tunnel error handling code. This could result in a kernel crash (denial of service) or potentially allow arbitrary code execution with kernel privileges.",
          "title": "Vulnerability description"
        },
        {
          "category": "summary",
          "text": "kernel: ip6_tunnel: clear skb2-\u003ecb[] in ip4ip6_err()",
          "title": "Vulnerability summary"
        },
        {
          "category": "other",
          "text": "This Critical flaw in the Linux kernel\u0027s IPv6 tunneling error handling can lead to a stack buffer overflow. An unauthenticated remote attacker could exploit this by sending specially crafted network packets, potentially resulting in a denial of service or information disclosure on affected Red Hat Enterprise Linux systems.",
          "title": "Statement"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
      ],
      "product_status": {
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          "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202606100451-0",
          "9Base-RHOSE-4.19:rhcos-s390x-4.19.9.6.202606100451-0",
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        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "Canonical URL",
          "url": "https://access.redhat.com/security/cve/CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "RHBZ#2464351",
          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464351"
        },
        {
          "category": "external",
          "summary": "https://www.cve.org/CVERecord?id=CVE-2026-43037",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "https://nvd.nist.gov/vuln/detail/CVE-2026-43037",
          "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43037"
        },
        {
          "category": "external",
          "summary": "https://lore.kernel.org/linux-cve-announce/2026050102-CVE-2026-43037-0346@gregkh/T",
          "url": "https://lore.kernel.org/linux-cve-announce/2026050102-CVE-2026-43037-0346@gregkh/T"
        }
      ],
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          "details": "For OpenShift Container Platform 4.19 see the following documentation, which will be updated shortly for this release, for important instructions on how to upgrade your cluster and fully apply this asynchronous errata update:\n\nhttps://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html/release_notes/\n\nYou may download the oc tool and use it to inspect release image metadata for x86_64, s390x, ppc64le, and aarch64 architectures. The image digests may be found at https://quay.io/repository/openshift-release-dev/ocp-release?tab=tags.\n\nThe sha values for the release are as follows:\n\n      (For x86_64 architecture)\n      The image digest is sha256:12ba901e472743bd79695772e65a451ac80ac29200cc06076471c42ed0956675\n\n      (For s390x architecture)\n      The image digest is sha256:33b55b92bbc4790ac37d4c7b11d1931a2240510799c38c1eca5aeb56aa7e3340\n\n      (For ppc64le architecture)\n      The image digest is sha256:3f3b589bf1ba5601644293d48f27ebf26cce0af703edde58001cf88f25066808\n\n      (For aarch64 architecture)\n      The image digest is sha256:sha256:c5b6085ebfabad3ca4a7bcf4c0a86bb7c1c2454333a3a75859eb0e7b85a609ee\n\nAll OpenShift Container Platform 4.19 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.19/html-single/updating_clusters/index#updating-cluster-cli.",
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          ],
          "restart_required": {
            "category": "none"
          },
          "url": "https://access.redhat.com/errata/RHSA-2026:25200"
        },
        {
          "category": "workaround",
          "details": "Mitigation for this issue is to skip loading the affected module `ip6_tunnel` onto the system till we have a fix available, this can be done by a blacklist mechanism, this will ensure the driver is not loaded at the boot time.\n~~~\nHow do I blacklist a kernel module to prevent it from loading automatically? \nhttps://access.redhat.com/solutions/41278  \n~~~\n\nWe may also want to detection and monitoring an affected system as below:\n~~~\nMonitor for exploitation attempts:\n\n# Enable kernel audit for IPv6 tunnel operations\nauditctl -a always,exit -F arch=b64 -S socket -F a0=10 -F a1=3 -k ipv6_tunnel\n\n# Monitor system logs for kernel panics/crashes\njournalctl -k -p err -f | grep -i \"ip6_tunnel\\|icmp\\|stack\"\n~~~",
          "product_ids": [
            "9Base-RHOSE-4.19:rhcos-aarch64-4.19.9.6.202606100451-0",
            "9Base-RHOSE-4.19:rhcos-ppc64le-4.19.9.6.202606100451-0",
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          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
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      "threats": [
        {
          "category": "impact",
          "details": "Critical"
        }
      ],
      "title": "kernel: ip6_tunnel: clear skb2-\u003ecb[] in ip4ip6_err()"
    }
  ]
}