Vulnerability-Lookup

GHSA-MFM7-HR4M-CF88

Vulnerability from github – Published: 2026-09-17 18:32 – Updated: 2026-09-17 18:32

Details

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

wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config

The response TLV loop advanced by tlv->len without a minimum, so a theoretical firmware response containing a zero-length TLV could spin forever, hanging the CPU during device probe. The u32 payload was also read without bounds checking. Reject a short fixed field, stop on a TLV whose length underruns the header or overruns the skb.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-90370"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-17T17:17:36Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config\n\nThe response TLV loop advanced by tlv-\u003elen without a minimum, so a\ntheoretical firmware response containing a zero-length TLV could spin\nforever, hanging the CPU during device probe.\nThe u32 payload was also read without bounds checking.\nReject a short fixed field, stop on a TLV whose length underruns the\nheader or overruns the skb.",
  "id": "GHSA-mfm7-hr4m-cf88",
  "modified": "2026-09-17T18:32:03Z",
  "published": "2026-09-17T18:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90370"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3106f62809d45c1e6aadfad1f4d7c3f74cd53a96"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39aa6b853b6d69dd1fee3507efdb3c277b7c53e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44af52467e72094351a362bf69effd52f1d9c186"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93eaddfdd35aa6bfe570c087db4e97fb9d8a791a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0bb2189ade617e624f3c8f444ebb05f59bb2524"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-90370 (GCVE-0-2026-90370)

Vulnerability from cvelistv5 – Published: 2026-09-17 16:09 – Updated: 2026-09-17 16:09

Title

wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config The response TLV loop advanced by tlv->len without a minimum, so a theoretical firmware response containing a zero-length TLV could spin forever, hanging the CPU during device probe. The u32 payload was also read without bounds checking. Reject a short fixed field, stop on a TLV whose length underruns the header or overruns the skb.

Severity

No CVSS data available.

Assigner

Linux mitre root

References

5 references

URL	Tags
https://git.kernel.org/stable/c/3106f62809d45c1e6…
https://git.kernel.org/stable/c/39aa6b853b6d69dd1…
https://git.kernel.org/stable/c/d0bb2189ade617e62…
https://git.kernel.org/stable/c/93eaddfdd35aa6bfe…
https://git.kernel.org/stable/c/44af52467e7209435…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 5d33053be609abfcfa9f5ca75d5554f2109aa40b , < 3106f62809d45c1e6aadfad1f4d7c3f74cd53a96 (git) Affected: 5d33053be609abfcfa9f5ca75d5554f2109aa40b , < 39aa6b853b6d69dd1fee3507efdb3c277b7c53e6 (git) Affected: 5d33053be609abfcfa9f5ca75d5554f2109aa40b , < d0bb2189ade617e624f3c8f444ebb05f59bb2524 (git) Affected: 5d33053be609abfcfa9f5ca75d5554f2109aa40b , < 93eaddfdd35aa6bfe570c087db4e97fb9d8a791a (git) Affected: 5d33053be609abfcfa9f5ca75d5554f2109aa40b , < 44af52467e72094351a362bf69effd52f1d9c186 (git)
Linux	Linux	Affected: 6.3 Unaffected: 0 , < 6.3 (semver) Unaffected: 6.6.157 , ≤ 6.6.* (semver) Unaffected: 6.12.110 , ≤ 6.12.* (semver) Unaffected: 6.18.52 , ≤ 6.18.* (semver) Unaffected: 7.2.6 , ≤ 7.2.* (semver) Unaffected: 7.3-rc1 , ≤ * (original_commit_for_fix)

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3106f62809d45c1e6aadfad1f4d7c3f74cd53a96",
              "status": "affected",
              "version": "5d33053be609abfcfa9f5ca75d5554f2109aa40b",
              "versionType": "git"
            },
            {
              "lessThan": "39aa6b853b6d69dd1fee3507efdb3c277b7c53e6",
              "status": "affected",
              "version": "5d33053be609abfcfa9f5ca75d5554f2109aa40b",
              "versionType": "git"
            },
            {
              "lessThan": "d0bb2189ade617e624f3c8f444ebb05f59bb2524",
              "status": "affected",
              "version": "5d33053be609abfcfa9f5ca75d5554f2109aa40b",
              "versionType": "git"
            },
            {
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              "status": "affected",
              "version": "5d33053be609abfcfa9f5ca75d5554f2109aa40b",
              "versionType": "git"
            },
            {
              "lessThan": "44af52467e72094351a362bf69effd52f1d9c186",
              "status": "affected",
              "version": "5d33053be609abfcfa9f5ca75d5554f2109aa40b",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/mediatek/mt76/mt7996/mcu.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.3"
            },
            {
              "lessThan": "6.3",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.157",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.110",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.52",
              "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": "6.6.157",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
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                  "versionEndExcluding": "6.12.110",
                  "versionStartIncluding": "6.3",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                },
                {
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config\n\nThe response TLV loop advanced by tlv-\u003elen without a minimum, so a\ntheoretical firmware response containing a zero-length TLV could spin\nforever, hanging the CPU during device probe.\nThe u32 payload was also read without bounds checking.\nReject a short fixed field, stop on a TLV whose length underruns the\nheader or overruns the skb."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-17T16:09:11.398Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/3106f62809d45c1e6aadfad1f4d7c3f74cd53a96"
        },
        {
          "url": "https://git.kernel.org/stable/c/39aa6b853b6d69dd1fee3507efdb3c277b7c53e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/d0bb2189ade617e624f3c8f444ebb05f59bb2524"
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          "url": "https://git.kernel.org/stable/c/93eaddfdd35aa6bfe570c087db4e97fb9d8a791a"
        },
        {
          "url": "https://git.kernel.org/stable/c/44af52467e72094351a362bf69effd52f1d9c186"
        }
      ],
      "title": "wifi: mt76: mt7996: bound TLV walk in mt7996_mcu_get_chip_config",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90370",
    "datePublished": "2026-09-17T16:09:11.398Z",
    "dateReserved": "2026-09-11T19:38:34.807Z",
    "dateUpdated": "2026-09-17T16:09:11.398Z",
    "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.
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GHSA-MFM7-HR4M-CF88

CVE-2026-90370 (GCVE-0-2026-90370)

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