Vulnerability-Lookup

FKIE_CVE-2026-93265

Vulnerability from fkie_nvd - Published: 2026-09-24 16:17 - Updated: 2026-09-25 05:17

Severity

7.7 (High) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node DSP3 has an integrated Ethernet MAC Endpoint which has its own set of config registers for configuring settings such as ASPM. The Endpoint device has two physical functions and those two functions share the same settings. Parse the Endpoint node under DSP3 instead of parsing both functions. The existing parsing logic also has one OOB issue as parsing both functions will result in accessing past the tc9563_pwrctrl->cfg array.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/6e5e6c2194b2acbded5b12ed80590d215b786d29
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/972c771674e88a43c8310c459ea30f0f0d0c168f

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pwrctrl/pci-pwrctrl-tc9563.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "972c771674e88a43c8310c459ea30f0f0d0c168f",
              "status": "affected",
              "version": "4c9c7be47310c1dbd7b6d37d45986123f5b133b4",
              "versionType": "git"
            },
            {
              "lessThan": "6e5e6c2194b2acbded5b12ed80590d215b786d29",
              "status": "affected",
              "version": "4c9c7be47310c1dbd7b6d37d45986123f5b133b4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pwrctrl/pci-pwrctrl-tc9563.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "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/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node\n\nDSP3 has an integrated Ethernet MAC Endpoint which has its own set of\nconfig registers for configuring settings such as ASPM. The Endpoint device\nhas two physical functions and those two functions share the same settings.\n\nParse the Endpoint node under DSP3 instead of parsing both functions.  The\nexisting parsing logic also has one OOB issue as parsing both functions\nwill result in accessing past the tc9563_pwrctrl-\u003ecfg array."
    }
  ],
  "id": "CVE-2026-93265",
  "lastModified": "2026-09-25T05:17:01.393",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.5,
        "impactScore": 5.2,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-24T16:17:23.340",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6e5e6c2194b2acbded5b12ed80590d215b786d29"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/972c771674e88a43c8310c459ea30f0f0d0c168f"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-93265 (GCVE-0-2026-93265)

Vulnerability from cvelistv5 – Published: 2026-09-24 15:52 – Updated: 2026-09-25 05:09

Title

PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node

Summary

Severity

7.7 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Assigner

Linux mitre root

References

2 references

URL	Tags
https://git.kernel.org/stable/c/972c771674e88a43c…
https://git.kernel.org/stable/c/6e5e6c2194b2acbde…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 4c9c7be47310c1dbd7b6d37d45986123f5b133b4 , < 972c771674e88a43c8310c459ea30f0f0d0c168f (git) Affected: 4c9c7be47310c1dbd7b6d37d45986123f5b133b4 , < 6e5e6c2194b2acbded5b12ed80590d215b786d29 (git)
Linux	Linux	Affected: 6.19 Unaffected: 0 , < 6.19 (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pwrctrl/pci-pwrctrl-tc9563.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "972c771674e88a43c8310c459ea30f0f0d0c168f",
              "status": "affected",
              "version": "4c9c7be47310c1dbd7b6d37d45986123f5b133b4",
              "versionType": "git"
            },
            {
              "lessThan": "6e5e6c2194b2acbded5b12ed80590d215b786d29",
              "status": "affected",
              "version": "4c9c7be47310c1dbd7b6d37d45986123f5b133b4",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/pci/pwrctrl/pci-pwrctrl-tc9563.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "lessThan": "6.19",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.6",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc1",
                  "versionStartIncluding": "6.19",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nPCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node\n\nDSP3 has an integrated Ethernet MAC Endpoint which has its own set of\nconfig registers for configuring settings such as ASPM. The Endpoint device\nhas two physical functions and those two functions share the same settings.\n\nParse the Endpoint node under DSP3 instead of parsing both functions.  The\nexisting parsing logic also has one OOB issue as parsing both functions\nwill result in accessing past the tc9563_pwrctrl-\u003ecfg array."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - tc9563_pwrctrl_parse_device_dt() is reached from tc9563_pwrctrl_probe() after qcom_pcie_host_init() (also pci-imx6/mediatek-gen3) calls pci_pwrctrl_create_devices() and of_platform_device_create() binds compatible pci1179,0623. The overflowed cfg[] slot is filled from that local OF node (DSP3 ethernet children), not from a network or USB payload.\nAC:L - In-tree qcs6490-rb3gen2.dts and qcs6490-thundercomm-minipc-g1iot.dts put two children (pci@0,0 and pci@0,1) under pcie@3,0. The pre-fix DSP3 loop does port++ then tc9563_pwrctrl_parse_device_dt() for each child, so the second child always uses port==5 past cfg[TC9563_MAX]. No race.\nPR:N - tc9563_pwrctrl_probe() has no capable() check. PCI_PWRCTRL_TC9563 defaults m on ARCH_QCOM, and qcom_pcie_host_init() \u2192 pci_pwrctrl_create_devices() binds the pci1179,0623 node during PCIe host probe on those boards, so the cfg[] overflow runs without sysfs bind or credentials.\nUI:N - qcom_pcie_host_init() creates the pwrctrl platform device and tc9563_pwrctrl_probe() walks for_each_child_of_node_scoped() during driver-core probe; no other user must mount a filesystem, open a device, or plug the switch.\nS:U - The overflowed cfg[port] store and the overlapping reset_gpio/adapter/client fields are in the host-kernel struct tc9563_pwrctrl allocated in tc9563_pwrctrl_probe(); this is not a KVM/Xen guest-to-host escape or an IOMMU/DMA bypass.\nC:N - On the in-tree DSP3 ethernet nodes, of_property_read_u32() of aspm-l0s-entry-delay-ns/aspm-l1-entry-delay-ns returns -EINVAL and does not store. The OOB store is cfg-\u003edisable_dfe=false (one zero byte into adapter). Later i2c_put_adapter() faults on that non-canonical pointer without copying kernel memory to userspace.\nI:H - tc9563_pwrctrl_parse_device_dt() writes through \u0026tc9563-\u003ecfg[port] when the second DSP3 child increments port to 5, past cfg[TC9563_MAX-1]. That out-of-bounds store overwrites the following adapter (and reset_gpio if delay properties are present) pointers in struct tc9563_pwrctrl, a kernel OOB write.\nA:H - After the port==5 overwrite, tc9563_pwrctrl_remove() and the probe error path call i2c_put_adapter(tc9563-\u003eadapter) (or put_device(\u0026adapter-\u003edev)), which dereferences the corrupted adapter pointer and oopses or panics the host."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-25T05:09:55.614Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/972c771674e88a43c8310c459ea30f0f0d0c168f"
        },
        {
          "url": "https://git.kernel.org/stable/c/6e5e6c2194b2acbded5b12ed80590d215b786d29"
        }
      ],
      "title": "PCI/pwrctrl: tc9563: Fix parsing the integrated Ethernet MAC Endpoint node",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93265",
    "datePublished": "2026-09-24T15:52:04.646Z",
    "dateReserved": "2026-09-17T16:02:15.097Z",
    "dateUpdated": "2026-09-25T05:09:55.614Z",
    "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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

FKIE_CVE-2026-93265

CVE-2026-93265 (GCVE-0-2026-93265)

Tags

Sightings

Nomenclature

Related by attack behaviour