CVE-2026-98407 (GCVE-0-2026-98407)
Vulnerability from cvelistv5
Published
2026-10-14 13:27
Modified
2026-10-19 09:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: rsi: fix heap OOB write on key removal When a key is removed (data == NULL), rsi_hal_load_key() runs: memset(&set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ); set_key is a struct rsi_set_key *, so the subscript is scaled by sizeof(struct rsi_set_key) (160 bytes): &set_key[FRAME_DESC_SZ] is skb->data + 2560, and the memset writes 144 zero bytes starting 2.4KB past the end of the 160-byte skb data buffer, corrupting unrelated heap objects. The intended byte offset would have been (u8 *)set_key + FRAME_DESC_SZ. The write fires on every DISABLE_KEY callback, so plain disconnects, roams and interface teardowns trigger it on real networks. The memset is redundant: the whole buffer is zeroed right after allocation, so the frame sent to the device is byte-identical without it. Drop the else branch; normal operation is unaffected. Discovered by Atuin - Automated Vulnerability Discovery Engine.
References
Impacted products
Vendor Product Version
Linux Linux Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
Version: dad0d04fa7ba41ce603a01e8e64967650303e9a2
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{
  "containers": {
    "cna": {
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          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/rsi/rsi_91x_mgmt.c"
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          "vendor": "Linux",
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              "version": "7.3",
              "versionType": "original_commit_for_fix"
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      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rsi: fix heap OOB write on key removal\n\nWhen a key is removed (data == NULL), rsi_hal_load_key() runs:\n\n\tmemset(\u0026set_key[FRAME_DESC_SZ], 0, frame_len - FRAME_DESC_SZ);\n\nset_key is a struct rsi_set_key *, so the subscript is scaled by\nsizeof(struct rsi_set_key) (160 bytes): \u0026set_key[FRAME_DESC_SZ] is\nskb-\u003edata + 2560, and the memset writes 144 zero bytes starting\n2.4KB past the end of the 160-byte skb data buffer, corrupting\nunrelated heap objects. The intended byte offset would have been\n(u8 *)set_key + FRAME_DESC_SZ.\n\nThe write fires on every DISABLE_KEY callback, so plain disconnects,\nroams and interface teardowns trigger it on real networks.\n\nThe memset is redundant: the whole buffer is zeroed right after\nallocation, so the frame sent to the device is byte-identical\nwithout it. Drop the else branch; normal operation is unaffected.\n\nDiscovered by Atuin - Automated Vulnerability Discovery Engine."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:19:00.454Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/b79e2f6585c014c42384f4caa7a37b3e5d26179c"
        },
        {
          "url": "https://git.kernel.org/stable/c/c67fb3b875a83f9ba92afea4036c7b541f77512a"
        },
        {
          "url": "https://git.kernel.org/stable/c/62d40db89180cfab7a917395f9ffc1dac62b0019"
        },
        {
          "url": "https://git.kernel.org/stable/c/00bea3589255603c38766cac4a4d6d36493b2556"
        },
        {
          "url": "https://git.kernel.org/stable/c/ac599cf8edf8aa2dae546f04d3f1849e32c2e738"
        },
        {
          "url": "https://git.kernel.org/stable/c/f4f2852b664c3ff1436785cd11258a0ce25b74b3"
        },
        {
          "url": "https://git.kernel.org/stable/c/8dab6ee020b2cd951b670626ba44a95cd4deac3d"
        },
        {
          "url": "https://git.kernel.org/stable/c/e6c5ed7a98d7bc8b0f7918246f1c90ddb3f79dfa"
        }
      ],
      "title": "wifi: rsi: fix heap OOB write on key removal",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98407",
    "datePublished": "2026-10-14T13:27:41.799Z",
    "dateReserved": "2026-09-25T10:25:14.347Z",
    "dateUpdated": "2026-10-19T09:19:00.454Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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