GHSA-5P9Q-RQWH-2WWW
Vulnerability from github – Published: 2026-10-14 15:32 – Updated: 2026-10-14 15:32In 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.
{
"affected": [],
"aliases": [
"CVE-2026-98407"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-10-14T14:17:51Z",
"severity": null
},
"details": "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.",
"id": "GHSA-5p9q-rqwh-2www",
"modified": "2026-10-14T15:32:20Z",
"published": "2026-10-14T15:32:20Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98407"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/00bea3589255603c38766cac4a4d6d36493b2556"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/62d40db89180cfab7a917395f9ffc1dac62b0019"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/8dab6ee020b2cd951b670626ba44a95cd4deac3d"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/ac599cf8edf8aa2dae546f04d3f1849e32c2e738"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/b79e2f6585c014c42384f4caa7a37b3e5d26179c"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/c67fb3b875a83f9ba92afea4036c7b541f77512a"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/e6c5ed7a98d7bc8b0f7918246f1c90ddb3f79dfa"
},
{
"type": "WEB",
"url": "https://git.kernel.org/stable/c/f4f2852b664c3ff1436785cd11258a0ce25b74b3"
}
],
"schema_version": "1.4.0",
"severity": []
}
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