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wifi: b43legacy: enforce bounds check on firmware key index in RX path

Type: advisorySource: Official CVE List1 source record

In the Linux kernel, the following vulnerability has been resolved: wifi: b43legacy: enforce bounds check on firmware key index in RX path Same fix as b43: the firmware-controlled key index in b43legacy_rx() can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is non-enforcing in production builds, allowing an out-of-bounds read of dev->key[]. Make the check enforcing by dropping the frame for invalid indices.

Announced Source revision 1
Original source ↗

CVE-2026-46163

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-2026-46163

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": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "a92bd0503df2488f2cc040f329ebccff1c1934cb",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "df805c1d085b7a96077f0964185764c87060950d",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "4242db36de99de734cc1f60e5edd86cda7e598c6",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "1baaeb6adecb9691748c0253dab6ddd19a2b4e9e",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "6ee946077607d7783ae6709a899213fc4fe08f35",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "9d1bc155802943e92c57a5fb923d23edfbf0b525",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "fdd4e51979f42ca8b1ab7e6176b607e1caabf2a5",
        "versionType": "git"
      },
      {
        "status": "affected",
        "version": "75388acd0cd827dc1498043daa7d1c760902cd67",
        "lessThan": "a035766f970bde2d4298346a31a80685be5c0205",
        "versionType": "git"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/broadcom/b43legacy/xmit.c"
    ],
    "defaultStatus": "unaffected"
  },
  {
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "vendor": "Linux",
    "product": "Linux",
    "versions": [
      {
        "status": "affected",
        "version": "2.6.24"
      },
      {
        "status": "unaffected",
        "version": "0",
        "lessThan": "2.6.24",
        "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": "6.6.140",
        "versionType": "semver",
        "lessThanOrEqual": "6.6.*"
      },
      {
        "status": "unaffected",
        "version": "6.12.88",
        "versionType": "semver",
        "lessThanOrEqual": "6.12.*"
      },
      {
        "status": "unaffected",
        "version": "6.18.30",
        "versionType": "semver",
        "lessThanOrEqual": "6.18.*"
      },
      {
        "status": "unaffected",
        "version": "7.0.7",
        "versionType": "semver",
        "lessThanOrEqual": "7.0.*"
      },
      {
        "status": "unaffected",
        "version": "7.1",
        "versionType": "original_commit_for_fix",
        "lessThanOrEqual": "*"
      }
    ],
    "programFiles": [
      "drivers/net/wireless/broadcom/b43legacy/xmit.c"
    ],
    "defaultStatus": "affected"
  }
]
Related CVEs
CVE-2026-46163

Source reference: /cveMetadata/cveId

Publisher severity

No explicit severity was provided.

Event
#28399 · Revision 1
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Publisher date
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