{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "b099631df160ec608cd6147f4d20a8042567a5b8"
            },
            {
              "fixed": "e23da72ef202654a7d5269885c4fa39a8404db76"
            },
            {
              "fixed": "ec7c05eed47d8b15c45380aee7ca168a82e15035"
            },
            {
              "fixed": "1fbe8972a39548a633d06d7b03a01b7b119a2c12"
            },
            {
              "fixed": "fe8c701a53c2816cd82301f66c671d952003c1b0"
            },
            {
              "fixed": "ce52e494a7555bdae1d990a2654fd7547ef6d986"
            },
            {
              "fixed": "6e6a529d6f779413379b4404c9ef6a36c0337225"
            },
            {
              "fixed": "df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"
            },
            {
              "fixed": "f865a57896bd92d7662eb2818d8f48872e2cbbc7"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.14.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.39"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64461.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek: Fix IRQ domain leak when port fails to enable\n\nWhen mtk_pcie_enable_port() fails, mtk_pcie_port_free() removes the port\nfrom pcie-\u003eports and frees the port structure. However, the IRQ domains set\nup earlier by mtk_pcie_init_irq_domain() are never freed.\n\nFix this by refactoring mtk_pcie_irq_teardown() into a per-port helper,\nmtk_pcie_irq_teardown_port(), and calling it from mtk_pcie_setup() when\nmtk_pcie_enable_port() fails. Since the IRQ teardown must only happen in\nthe probe error path (during resume, child devices may have active MSI\nmappings and the NOIRQ context prohibits sleeping locks),\nmtk_pcie_enable_port() is changed to return an error code so callers can\ndistinguish the two paths and act accordingly.\n\nThis issue was reported by Sashiko while reviewing the EcoNet EN7528 SoC\nsupport series.",
  "id": "CVE-2026-64461",
  "modified": "2026-07-27T03:56:35.894904635Z",
  "published": "2026-07-25T08:51:28.309Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1fbe8972a39548a633d06d7b03a01b7b119a2c12"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6e6a529d6f779413379b4404c9ef6a36c0337225"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ce52e494a7555bdae1d990a2654fd7547ef6d986"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df77314b3bedbd9ad5d6f0682f98b99e3c5f7e2e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e23da72ef202654a7d5269885c4fa39a8404db76"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec7c05eed47d8b15c45380aee7ca168a82e15035"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f865a57896bd92d7662eb2818d8f48872e2cbbc7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fe8c701a53c2816cd82301f66c671d952003c1b0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64461.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64461"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "PCI: mediatek: Fix IRQ domain leak when port fails to enable"
}