Vulnerability-Lookup

FKIE_CVE-2026-64145

Vulnerability from fkie_nvd - Published: 2026-07-19 16:17 - Updated: 2026-08-17 19:39

Severity

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

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: wilc1000: fix dma_buffer leak on bus acquire failure wilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at the top of the function and uses a 'fail:' label to free it via kfree(dma_buffer) on error. All later error paths correctly use 'goto fail' to route through this cleanup. However, the early failure path after the first acquire_bus() call uses a bare 'return ret;', which leaks dma_buffer whenever the bus acquire fails. Replace the early return with goto fail so the existing cleanup path runs. Found via a custom Coccinelle semantic patch hunting for kmalloc'd locals leaked on early-return error paths in driver firmware-download code.

References

URL	Tags
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5	Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69	Patch

Impacted products

Vendor	Product	Version
linux	linux_kernel	*
linux	linux_kernel	*
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1
linux	linux_kernel	7.1

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "95c82d498d74c4e587db30021ca1aec90e29b5a5",
              "status": "affected",
              "version": "1241c5650ff7a0236cebb89acca8aade48839fd6",
              "versionType": "git"
            },
            {
              "lessThan": "32d7584441b9ecb279a03653b432612546e5efbe",
              "status": "affected",
              "version": "1241c5650ff7a0236cebb89acca8aade48839fd6",
              "versionType": "git"
            },
            {
              "lessThan": "dd7b6a8671939708cc4b7a46786d8c11297e8f69",
              "status": "affected",
              "version": "1241c5650ff7a0236cebb89acca8aade48839fd6",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.34",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.11",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A4B1EF6D-18D7-4838-BC37-7499D5DCC3C0",
              "versionEndExcluding": "6.18.34",
              "versionStartIncluding": "6.13",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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              "versionStartIncluding": "6.19",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: fix dma_buffer leak on bus acquire failure\n\nwilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at\nthe top of the function and uses a \u0027fail:\u0027 label to free it via\nkfree(dma_buffer) on error.\n\nAll later error paths correctly use \u0027goto fail\u0027 to route through this\ncleanup. However, the early failure path after the first acquire_bus()\ncall uses a bare \u0027return ret;\u0027, which leaks dma_buffer whenever the bus\nacquire fails.\n\nReplace the early return with goto fail so the existing cleanup path\nruns.\n\nFound via a custom Coccinelle semantic patch hunting for kmalloc\u0027d\nlocals leaked on early-return error paths in driver firmware-download\ncode."
    }
  ],
  "id": "CVE-2026-64145",
  "lastModified": "2026-08-17T19:39:19.187",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2026-07-19T16:17:56.443",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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      ],
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    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2026-64145 (GCVE-0-2026-64145)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:40 – Updated: 2026-07-19 15:40

Title

wifi: wilc1000: fix dma_buffer leak on bus acquire failure

Summary

Severity

No CVSS data available.

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/95c82d498d74c4e58…
https://git.kernel.org/stable/c/32d7584441b9ecb27…
https://git.kernel.org/stable/c/dd7b6a8671939708c…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < 95c82d498d74c4e587db30021ca1aec90e29b5a5 (git) Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < 32d7584441b9ecb279a03653b432612546e5efbe (git) Affected: 1241c5650ff7a0236cebb89acca8aade48839fd6 , < dd7b6a8671939708cc4b7a46786d8c11297e8f69 (git)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 6.18.34 , ≤ 6.18.* (semver) Unaffected: 7.0.11 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "95c82d498d74c4e587db30021ca1aec90e29b5a5",
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              "versionType": "git"
            },
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              "version": "1241c5650ff7a0236cebb89acca8aade48839fd6",
              "versionType": "git"
            },
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              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
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          "programFiles": [
            "drivers/net/wireless/microchip/wilc1000/wlan.c"
          ],
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          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
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              "version": "0",
              "versionType": "semver"
            },
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              "versionType": "semver"
            },
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              "status": "unaffected",
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
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              "versionType": "original_commit_for_fix"
            }
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}

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.

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.

Action not permitted

FKIE_CVE-2026-64145

CVE-2026-64145 (GCVE-0-2026-64145)

Tags

Sightings

Nomenclature