{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "original_tag": "V11.3.2",
                "range": [
                  {
                    "fixed": "8a59a4b19bf72977819feddef87d41163ced7004"
                  }
                ],
                "source": "REFERENCES_TAG"
              }
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8a59a4b19bf72977819feddef87d41163ced7004"
            }
          ],
          "repo": "https://github.com/freertos/freertos-kernel",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-pv9j-rq42-3fjc"
  ],
  "database_specific": {
    "cna_assigner": "AMZN",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109587.json",
    "unresolved_ranges": [
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "11.3.0"
              },
              {
                "last_affected": "11.3.1"
              }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StandardRange"
          }
        ]
      },
      {
        "extracted_events": [
          {
            "range": [
              {
                "introduced": "11.3.0"
              },
              {
                "last_affected": "11.3.1"
              }
            ],
            "source": "CPE_FIELD",
            "strategy": "CPEApplicability"
          }
        ]
      }
    ]
  },
  "details": "Incorrect authorization in the Arm Cortex-R82 (Armv8-R AArch64) MPU port in FreeRTOS-Kernel V11.3.0 and V11.3.1 might allow an unprivileged task on MPU-enabled builds to read and write privileged kernel memory outside the regions assigned to it, via a buffer argument passed to an MPU system call.\n\n\n\nTo remediate this issue, users should upgrade to version V11.3.2 or later.",
  "id": "CVE-2026-109587",
  "modified": "2026-10-24T02:30:56.101509857Z",
  "published": "2026-10-16T17:08:07.685Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://aws.amazon.com/security/security-bulletins/2026-138-aws/"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109587.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/FreeRTOS/FreeRTOS-Kernel/security/advisories/GHSA-pv9j-rq42-3fjc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-109587"
    },
    {
      "type": "FIX",
      "url": "https://github.com/FreeRTOS/FreeRTOS-Kernel/releases/tag/V11.3.2"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Incorrect authorization in the Arm Cortex-R82 MPU port in FreeRTOS-Kernel"
}