Vulnerability-Lookup

GHSA-24VC-PXRH-RPJV

Vulnerability from github – Published: 2026-05-06 12:30 – Updated: 2026-05-08 15:31

Details

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

wifi: brcmfmac: validate bsscfg indices in IF events

brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check.

Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array.

[add missing wifi prefix]

Severity ?

8.8 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-43110"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-06T10:16:24Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: validate bsscfg indices in IF events\n\nbrcmf_fweh_handle_if_event() validates the firmware-provided interface\nindex before it touches drvr-\u003eiflist[], but it still uses the raw\nbsscfgidx field as an array index without a matching range check.\n\nReject IF events whose bsscfg index does not fit in drvr-\u003eiflist[]\nbefore indexing the interface array.\n\n[add missing wifi prefix]",
  "id": "GHSA-24vc-pxrh-rpjv",
  "modified": "2026-05-08T15:31:16Z",
  "published": "2026-05-06T12:30:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-43110"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1ae1e1caa428844e481231f6dbe9b4f475f1d52d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/304950a467d83678bd0b0f46331882e2ac23b12d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3ec7437e9d11374105c2c4e47ae671537729d7e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9fca68c2512a362cad258e4df12a307bb2ee4b8e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b427c2b05222db36d32ee141609de6128e9091bb"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-43110 (GCVE-0-2026-43110)

Vulnerability from cvelistv5 – Published: 2026-05-06 07:40 – Updated: 2026-05-11 22:17

Title

wifi: brcmfmac: validate bsscfg indices in IF events

Summary

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr->iflist[], but it still uses the raw bsscfgidx field as an array index without a matching range check. Reject IF events whose bsscfg index does not fit in drvr->iflist[] before indexing the interface array. [add missing wifi prefix]

Severity ?

8.8 (High)


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

Assigner

Linux

References

5 references

URL	Tags
https://git.kernel.org/stable/c/3ec7437e9d1137410…
https://git.kernel.org/stable/c/9fca68c2512a362ca…
https://git.kernel.org/stable/c/1ae1e1caa428844e4…
https://git.kernel.org/stable/c/b427c2b05222db36d…
https://git.kernel.org/stable/c/304950a467d83678b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 2880b86859967af710c72f7d34fb421a86a71e22 , < 3ec7437e9d11374105c2c4e47ae671537729d7e6 (git) Affected: 2880b86859967af710c72f7d34fb421a86a71e22 , < 9fca68c2512a362cad258e4df12a307bb2ee4b8e (git) Affected: 2880b86859967af710c72f7d34fb421a86a71e22 , < 1ae1e1caa428844e481231f6dbe9b4f475f1d52d (git) Affected: 2880b86859967af710c72f7d34fb421a86a71e22 , < b427c2b05222db36d32ee141609de6128e9091bb (git) Affected: 2880b86859967af710c72f7d34fb421a86a71e22 , < 304950a467d83678bd0b0f46331882e2ac23b12d (git)
Linux	Linux	Affected: 3.9 Unaffected: 0 , < 3.9 (semver) Unaffected: 6.6.136 , ≤ 6.6.* (semver) Unaffected: 6.12.83 , ≤ 6.12.* (semver) Unaffected: 6.18.24 , ≤ 6.18.* (semver) Unaffected: 6.19.14 , ≤ 6.19.* (semver) Unaffected: 7.0 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "3ec7437e9d11374105c2c4e47ae671537729d7e6",
              "status": "affected",
              "version": "2880b86859967af710c72f7d34fb421a86a71e22",
              "versionType": "git"
            },
            {
              "lessThan": "9fca68c2512a362cad258e4df12a307bb2ee4b8e",
              "status": "affected",
              "version": "2880b86859967af710c72f7d34fb421a86a71e22",
              "versionType": "git"
            },
            {
              "lessThan": "1ae1e1caa428844e481231f6dbe9b4f475f1d52d",
              "status": "affected",
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              "versionType": "git"
            },
            {
              "lessThan": "b427c2b05222db36d32ee141609de6128e9091bb",
              "status": "affected",
              "version": "2880b86859967af710c72f7d34fb421a86a71e22",
              "versionType": "git"
            },
            {
              "lessThan": "304950a467d83678bd0b0f46331882e2ac23b12d",
              "status": "affected",
              "version": "2880b86859967af710c72f7d34fb421a86a71e22",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.9"
            },
            {
              "lessThan": "3.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.136",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.83",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.24",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.19.*",
              "status": "unaffected",
              "version": "6.19.14",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.136",
                  "versionStartIncluding": "3.9",
                  "vulnerable": true
                },
                {
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                },
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                }
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              "negate": false,
              "operator": "OR"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: brcmfmac: validate bsscfg indices in IF events\n\nbrcmf_fweh_handle_if_event() validates the firmware-provided interface\nindex before it touches drvr-\u003eiflist[], but it still uses the raw\nbsscfgidx field as an array index without a matching range check.\n\nReject IF events whose bsscfg index does not fit in drvr-\u003eiflist[]\nbefore indexing the interface array.\n\n[add missing wifi prefix]"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T22:17:55.761Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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      "references": [
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          "url": "https://git.kernel.org/stable/c/3ec7437e9d11374105c2c4e47ae671537729d7e6"
        },
        {
          "url": "https://git.kernel.org/stable/c/9fca68c2512a362cad258e4df12a307bb2ee4b8e"
        },
        {
          "url": "https://git.kernel.org/stable/c/1ae1e1caa428844e481231f6dbe9b4f475f1d52d"
        },
        {
          "url": "https://git.kernel.org/stable/c/b427c2b05222db36d32ee141609de6128e9091bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/304950a467d83678bd0b0f46331882e2ac23b12d"
        }
      ],
      "title": "wifi: brcmfmac: validate bsscfg indices in IF events",
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        "engine": "bippy-1.2.0"
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-43110",
    "datePublished": "2026-05-06T07:40:37.250Z",
    "dateReserved": "2026-05-01T14:12:55.986Z",
    "dateUpdated": "2026-05-11T22:17:55.761Z",
    "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-24VC-PXRH-RPJV

CVE-2026-43110 (GCVE-0-2026-43110)

Tags

Sightings

Nomenclature