wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler

{
  "id": "62137e152e33c9bdaeeb67412e770c31a3db4af5219df21885a3b2a1d2baa7e4",
  "url": "https://osv.dev/vulnerability/CVE-2026-68353",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: ath6kl: fix OOB read from firmware num_msg in TX complete handler The firmware-controlled num_msg field (u8, 0-255) drives the loop in ath6kl_wmi_tx_complete_event_rx() without validation against the buffer length. This allows out-of-bounds reads of up to 1020 bytes past the WMI event buffer when the firmware sends an inflated num_msg. Add a check that the buffer is large enough to hold the fixed struct and the num_msg variable-length entries.",
    "evidence": "osv:CVE-2026-68353",
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      "modified": "2026-10-28T02:30:37.389106764Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/0e0fc04af9b443c6b425f00fb604ff599bc80d1d",
        "https://git.kernel.org/stable/c/289edc3c71344b89e6522891147cfb8f61b088bb",
        "https://git.kernel.org/stable/c/35196a07603f8c94a4943093bc26d5b5826285f8",
        "https://git.kernel.org/stable/c/3a21c89215cc18f1a97c5e5bfd1da6d4f3d44495",
        "https://git.kernel.org/stable/c/5297299c3fa6133275db0be99d69cd759b6cbfe9",
        "https://git.kernel.org/stable/c/69ac7ba3a3df6654e7daa82674575a8c4a1a63ea",
        "https://git.kernel.org/stable/c/c38b0d5c661951b5dd082bdf31f8a57a0ce6e540",
        "https://git.kernel.org/stable/c/eb636fbc443149b3501c3f97e26225ddcb314a0f",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68353.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-68353",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
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  "source_id": "core-osv",
  "document_id": 504860,
  "published_at": "2026-08-10T12:03:30.33+00:00"
}