Vulnerability-Lookup

GHSA-RPC3-VJ77-CXWG

Vulnerability from github – Published: 2026-06-08 18:31 – Updated: 2026-06-08 18:31

Details

In the Linux kernel, the following vulnerability has been resolved:

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

In scpsys_get_bus_protection_legacy(), of_find_node_with_property() returns a device node with its reference count incremented. The function then calls of_node_put(node) before checking whether syscon_regmap_lookup_by_phandle() returns an error. If an error occurs, dev_err_probe() dereferences the node pointer to print diagnostic information, but the node memory may have already been freed due to the earlier of_node_put(), leading to a use-after-free vulnerability.

Fix this by moving the of_node_put() call after the error check, ensuring the node is still valid when accessed in the error path.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-46308"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-08T17:16:49Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()\n\nIn scpsys_get_bus_protection_legacy(), of_find_node_with_property()\nreturns a device node with its reference count incremented. The function\nthen calls of_node_put(node) before checking whether\nsyscon_regmap_lookup_by_phandle() returns an error. If an error occurs,\ndev_err_probe() dereferences the node pointer to print diagnostic\ninformation, but the node memory may have already been freed due to the\nearlier of_node_put(), leading to a use-after-free vulnerability.\n\nFix this by moving the of_node_put() call after the error check, ensuring\nthe node is still valid when accessed in the error path.",
  "id": "GHSA-rpc3-vj77-cxwg",
  "modified": "2026-06-08T18:31:53Z",
  "published": "2026-06-08T18:31:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46308"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-46308 (GCVE-0-2026-46308)

Vulnerability from cvelistv5 – Published: 2026-06-08 15:46 – Updated: 2026-06-08 15:46

Title

pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()

Summary

In the Linux kernel, the following vulnerability has been resolved: pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy() In scpsys_get_bus_protection_legacy(), of_find_node_with_property() returns a device node with its reference count incremented. The function then calls of_node_put(node) before checking whether syscon_regmap_lookup_by_phandle() returns an error. If an error occurs, dev_err_probe() dereferences the node pointer to print diagnostic information, but the node memory may have already been freed due to the earlier of_node_put(), leading to a use-after-free vulnerability. Fix this by moving the of_node_put() call after the error check, ensuring the node is still valid when accessed in the error path.

Severity

No CVSS data available.

Assigner

Linux

References

3 references

URL	Tags
https://git.kernel.org/stable/c/cb27e43c0511e9e1c…
https://git.kernel.org/stable/c/38d8410021b55d226…
https://git.kernel.org/stable/c/ec1fcddb3117d9452…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: c29345fa5f66bea0790cf2219f57b974d4fc177b , < cb27e43c0511e9e1ca8818d231656070b11c18cf (git) Affected: c29345fa5f66bea0790cf2219f57b974d4fc177b , < 38d8410021b55d226847b2ac8d189d89fe5a8866 (git) Affected: c29345fa5f66bea0790cf2219f57b974d4fc177b , < ec1fcddb3117d9452210e838fd37389ee61e10e8 (git)
Linux	Linux	Affected: 6.18 Unaffected: 0 , < 6.18 (semver) Unaffected: 6.18.30 , ≤ 6.18.* (semver) Unaffected: 7.0.7 , ≤ 7.0.* (semver) Unaffected: 7.1-rc3 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pmdomain/mediatek/mtk-pm-domains.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "cb27e43c0511e9e1ca8818d231656070b11c18cf",
              "status": "affected",
              "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b",
              "versionType": "git"
            },
            {
              "lessThan": "38d8410021b55d226847b2ac8d189d89fe5a8866",
              "status": "affected",
              "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b",
              "versionType": "git"
            },
            {
              "lessThan": "ec1fcddb3117d9452210e838fd37389ee61e10e8",
              "status": "affected",
              "version": "c29345fa5f66bea0790cf2219f57b974d4fc177b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pmdomain/mediatek/mtk-pm-domains.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.18"
            },
            {
              "lessThan": "6.18",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.30",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.7",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1-rc3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.30",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.7",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1-rc3",
                  "versionStartIncluding": "6.18",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()\n\nIn scpsys_get_bus_protection_legacy(), of_find_node_with_property()\nreturns a device node with its reference count incremented. The function\nthen calls of_node_put(node) before checking whether\nsyscon_regmap_lookup_by_phandle() returns an error. If an error occurs,\ndev_err_probe() dereferences the node pointer to print diagnostic\ninformation, but the node memory may have already been freed due to the\nearlier of_node_put(), leading to a use-after-free vulnerability.\n\nFix this by moving the of_node_put() call after the error check, ensuring\nthe node is still valid when accessed in the error path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-08T15:46:36.218Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/cb27e43c0511e9e1ca8818d231656070b11c18cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/38d8410021b55d226847b2ac8d189d89fe5a8866"
        },
        {
          "url": "https://git.kernel.org/stable/c/ec1fcddb3117d9452210e838fd37389ee61e10e8"
        }
      ],
      "title": "pmdomain: mediatek: fix use-after-free in scpsys_get_bus_protection_legacy()",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46308",
    "datePublished": "2026-06-08T15:46:36.218Z",
    "dateReserved": "2026-05-13T15:03:33.111Z",
    "dateUpdated": "2026-06-08T15:46:36.218Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-RPC3-VJ77-CXWG

CVE-2026-46308 (GCVE-0-2026-46308)

Tags

Sightings

Nomenclature