GHSA-78GM-4HWW-QGR6

Vulnerability from github – Published: 2026-08-10 15:33 – Updated: 2026-08-19 18:32
VLAI
Details

In the Linux kernel, the following vulnerability has been resolved:

wifi: ath6kl: fix OOB access from firmware ADDBA window size

aggr_recv_addba_req_evt() logs a debug message when the firmware-supplied win_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not return. The out-of-range win_sz is then used in TID_WINDOW_SZ() to compute a kzalloc size and stored in rxtid->hold_q_sz, leading to zero-size or overflowed allocations and subsequent out-of-bounds access.

Clean up any previously active aggregation session for the TID first, then return early when win_sz is out of the valid range, instead of proceeding with a broken allocation size.

Severity
8.8 (High)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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{
  "affected": [],
  "aliases": [
    "CVE-2026-68199"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-10T13:20:07Z",
    "severity": "HIGH"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: ath6kl: fix OOB access from firmware ADDBA window size\n\naggr_recv_addba_req_evt() logs a debug message when the firmware-supplied\nwin_sz is outside [AGGR_WIN_SZ_MIN, AGGR_WIN_SZ_MAX] but does not\nreturn. The out-of-range win_sz is then used in TID_WINDOW_SZ() to\ncompute a kzalloc size and stored in rxtid-\u003ehold_q_sz, leading to\nzero-size or overflowed allocations and subsequent out-of-bounds access.\n\nClean up any previously active aggregation session for the TID first,\nthen return early when win_sz is out of the valid range, instead of\nproceeding with a broken allocation size.",
  "id": "GHSA-78gm-4hww-qgr6",
  "modified": "2026-08-19T18:32:10Z",
  "published": "2026-08-10T15:33:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-68199"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/44126b6994eeb28f2103b638e698f40a1244f327"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/58c6c8dc2e022e1b4f3dc58725a1ca49ff470f9c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5a65fd4722416061698b0a3277222381efbc4882"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67bc9af4f41f2bdba20404fbd753b2a1bd6dd352"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c8e3ca7954d8233fbc54bd370c1827670f43c538"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cec0a487cf38ac1f9bca240ffe8a94c5014b72f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d4558c140782180e2c80a7588a4af9f8675adfc4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f480d9910fcfe326db3a6281df80e83af347193e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}



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