CVE-2026-93802 (GCVE-0-2026-93802)
Vulnerability from cvelistv5
Published
2026-09-24 16:02
Modified
2026-10-03 10:57
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: validate beacon length before fixed buffer copy rsi_prepare_beacon() copies the mac80211 beacon frame after FRAME_DESC_SZ into a management skb whose usable tailroom may be smaller than MAX_MGMT_PKT_SIZE after alignment. Validate the beacon length against the actual tailroom before the copy and skb_put(). Leave ownership of the management skb with the caller on error, matching the existing rsi_send_beacon() cleanup path.
References
Impacted products
Vendor Product Version
Linux Linux Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
Version: d26a9559403c7c3ec3b430f5825bc22c3d40abdb
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{
  "containers": {
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          "programFiles": [
            "drivers/net/wireless/rsi/rsi_91x_hal.c"
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          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "versionType": "semver"
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              "versionType": "semver"
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              "status": "unaffected",
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              "version": "7.2",
              "versionType": "original_commit_for_fix"
            }
          ]
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: validate beacon length before fixed buffer copy\n\nrsi_prepare_beacon() copies the mac80211 beacon frame after\nFRAME_DESC_SZ into a management skb whose usable tailroom may be smaller\nthan MAX_MGMT_PKT_SIZE after alignment.\n\nValidate the beacon length against the actual tailroom before the copy\nand skb_put(). Leave ownership of the management skb with the caller on\nerror, matching the existing rsi_send_beacon() cleanup path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-03T10:57:35.833Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/795ba65f46fe44061f1195951c122cc8ec685d44"
        },
        {
          "url": "https://git.kernel.org/stable/c/66a964432b2758a4cf69962366e37581d6e70632"
        },
        {
          "url": "https://git.kernel.org/stable/c/7f99742c3c2801f8033d8b7a0a58254d7f24fb1e"
        },
        {
          "url": "https://git.kernel.org/stable/c/f08d7f3c916335a0e539f1c45c130615967fac47"
        },
        {
          "url": "https://git.kernel.org/stable/c/87710ad633ce4588aec88611d0d0745eb33a6991"
        },
        {
          "url": "https://git.kernel.org/stable/c/266f195d5a14eec6c482fd09fbc924584c3371a7"
        },
        {
          "url": "https://git.kernel.org/stable/c/8ecdeb8b8a33b22c597299043c0dcfce50beb9ea"
        }
      ],
      "title": "wifi: rsi: validate beacon length before fixed buffer copy",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-93802",
    "datePublished": "2026-09-24T16:02:36.341Z",
    "dateReserved": "2026-09-18T17:59:28.789Z",
    "dateUpdated": "2026-10-03T10:57:35.833Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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