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wifi: rsi: fix heap OOB write on key removal

Type: advisorySources: OSV

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.

Products
Kernel
Affected versions
Not specified
Fixed versions
5.10.271, 5.15.222, 6.1.189, 6.12.112, 6.18.54, 6.6.158, 7.2.8
CVEs
CVE-2026-98407
Confirmed fixed CVEs
Not specified
Updated in this feed
5 Nov 2026, 17:15 UTC · Revision 1

Source evidence

wifi: rsi: fix heap OOB write on key removal

core-osv · Original source

Published 14 Oct 2026, 13:27 UTC

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.

osv:CVE-2026-98407

Kernel

Fixed versions: 5.10.271, 5.15.222, 6.1.189, 6.6.158, 6.12.112, 6.18.54, 7.2.8

Complete source record
{
  "id": "08e2eac16ce0294f4edfe388a4003bf6c34c0294799d5c1fbebca0803a68afcf",
  "url": "https://osv.dev/vulnerability/CVE-2026-98407",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: rsi: fix heap OOB write on key removal",
    "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.",
    "evidence": "osv:CVE-2026-98407",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "evidence": "/affected/1/ranges"
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            "value": "6.12.112",
            "evidence": "/affected/1/ranges"
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          {
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          },
          {
            "value": "7.2.8",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "CVE-2026-98407",
      "aliases": [
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      "affected": [
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                {
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                  "fixed": "8dab6ee020b2cd951b670626ba44a95cd4deac3d"
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              "type": "ECOSYSTEM",
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                  "introduced": "3.15.0"
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            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.11.0"
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                {
                  "fixed": "5.15.222"
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              ]
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
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              ]
            },
            {
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                  "introduced": "6.2.0"
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            {
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                  "introduced": "6.7.0"
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            {
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          "package": {
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            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-98407.json"
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        }
      ],
      "modified": "2026-10-28T02:30:44.524914810Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/00bea3589255603c38766cac4a4d6d36493b2556",
        "https://git.kernel.org/stable/c/62d40db89180cfab7a917395f9ffc1dac62b0019",
        "https://git.kernel.org/stable/c/8dab6ee020b2cd951b670626ba44a95cd4deac3d",
        "https://git.kernel.org/stable/c/ac599cf8edf8aa2dae546f04d3f1849e32c2e738",
        "https://git.kernel.org/stable/c/b79e2f6585c014c42384f4caa7a37b3e5d26179c",
        "https://git.kernel.org/stable/c/c67fb3b875a83f9ba92afea4036c7b541f77512a",
        "https://git.kernel.org/stable/c/e6c5ed7a98d7bc8b0f7918246f1c90ddb3f79dfa",
        "https://git.kernel.org/stable/c/f4f2852b664c3ff1436785cd11258a0ce25b74b3",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98407.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-98407",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98407.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-98407",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 512515,
  "published_at": "2026-10-14T13:27:41.799+00:00"
}