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wifi: brcmfmac: validate bsscfg indices in IF events

Type: advisorySource: Official CVE List1 source record

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]

Announced Source revision 1
Original source ↗

CVE-2026-43110

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: cve:CVE-2026-43110

Linux

Source reference: /containers/cna/affected/0/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Linux

Source reference: /containers/cna/affected/1/product

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "b329fbcf075949a038045d8e9b86ae3d5bbd8a54",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "2ae3ccb78c0a9ef5ee3d80d02ab319ac1d5af734",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "9c81bcc2c695e0082012a2a3d36a0eefaa51579c",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "3ec7437e9d11374105c2c4e47ae671537729d7e6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "9fca68c2512a362cad258e4df12a307bb2ee4b8e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "1ae1e1caa428844e481231f6dbe9b4f475f1d52d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "b427c2b05222db36d32ee141609de6128e9091bb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "2880b86859967af710c72f7d34fb421a86a71e22",
        "lessThan": "304950a467d83678bd0b0f46331882e2ac23b12d",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "3.9"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "3.9",
        "versionType": "semver"
      },
      {
        "status": "unaffected",
        "version": "5.10.258",
        "versionType": "semver",
        "lessThanOrEqual": "5.10.*"
      },
      {
        "status": "unaffected",
        "version": "5.15.209",
        "versionType": "semver",
        "lessThanOrEqual": "5.15.*"
      },
      {
        "status": "unaffected",
        "version": "6.1.175",
        "versionType": "semver",
        "lessThanOrEqual": "6.1.*"
      },
      {
        "status": "unaffected",
        "version": "6.6.136",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.83",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.24",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "6.19.14",
        "versionType": "semver",
        "lessThanOrEqual": "6.19.*"
      },
      {
        "status": "unaffected",
        "version": "7.0",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/broadcom/brcm80211/brcmfmac/fweh.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-43110

Source reference: /cveMetadata/cveId

Publisher severity

high

Source reference: /containers/cna/metrics

Event
#40024 · Revision 1
Added to Heist Feed
Publisher date
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