FKIE_CVE-2026-63862

Vulnerability from fkie_nvd - Published: 2026-07-19 15:16 - Updated: 2026-07-19 15:16
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: PCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found In mtk_pcie_setup_irq(), the IRQ domains are allocated before the controller's IRQ is fetched. If the latter fails, the function directly returns an error, without cleaning up the allocated domains. Hence, reverse the order so that the IRQ domains are allocated after the controller's IRQ is found. This was flagged by Sashiko during a review of "[PATCH v6 0/7] PCI: mediatek-gen3: add power control support".
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/07a5ecb94768cbf76fe659e9924000e9ced0c8a6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0a2d60edc3e57c9512e239ebdfd12204d3368560
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/215d4273347b9010a9deae378b0df79c163f707d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5573c44cb3fd01a9f62d569ae9ac870ef5f0e0ba
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/946b31b5a699a2760ee52af0055e5ebf29c5f4cb
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/abd3c1927d33766aef39c4640880e3d2637429c2
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-mediatek-gen3.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "abd3c1927d33766aef39c4640880e3d2637429c2",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            },
            {
              "lessThan": "07a5ecb94768cbf76fe659e9924000e9ced0c8a6",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            },
            {
              "lessThan": "946b31b5a699a2760ee52af0055e5ebf29c5f4cb",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            },
            {
              "lessThan": "0a2d60edc3e57c9512e239ebdfd12204d3368560",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            },
            {
              "lessThan": "215d4273347b9010a9deae378b0df79c163f707d",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            },
            {
              "lessThan": "5573c44cb3fd01a9f62d569ae9ac870ef5f0e0ba",
              "status": "affected",
              "version": "814cceebba9b7d1306b8d49587ffb0e81f7b73af",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/controller/pcie-mediatek-gen3.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.13"
            },
            {
              "lessThan": "5.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI: mediatek-gen3: Prevent leaking IRQ domains when IRQ not found\n\nIn mtk_pcie_setup_irq(), the IRQ domains are allocated before the\ncontroller\u0027s IRQ is fetched. If the latter fails, the function\ndirectly returns an error, without cleaning up the allocated domains.\n\nHence, reverse the order so that the IRQ domains are allocated after the\ncontroller\u0027s IRQ is found.\n\nThis was flagged by Sashiko during a review of \"[PATCH v6 0/7] PCI:\nmediatek-gen3: add power control support\"."
    }
  ],
  "id": "CVE-2026-63862",
  "lastModified": "2026-07-19T15:16:53.097",
  "metrics": {},
  "published": "2026-07-19T15:16:53.097",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07a5ecb94768cbf76fe659e9924000e9ced0c8a6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0a2d60edc3e57c9512e239ebdfd12204d3368560"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/215d4273347b9010a9deae378b0df79c163f707d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5573c44cb3fd01a9f62d569ae9ac870ef5f0e0ba"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/946b31b5a699a2760ee52af0055e5ebf29c5f4cb"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/abd3c1927d33766aef39c4640880e3d2637429c2"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}



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