wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete

{
  "id": "af000610a736d5b34caef95bdb42b78b8ff2cdcf0c9840ca6cdd8403c41cbd48",
  "url": "https://osv.dev/vulnerability/CVE-2026-90380",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: wifi: mt76: mt792x: fix use-after-free in mt76_rx_poll_complete A use-after-free issue occurs in mt76_rx_poll_complete due to a race condition. The STA has already been removed, but the rx_status still had a pointer to the wcid in the STA. Set the links' wcid pointers to be NULL for a MLD in mt7925_sta_pre_rcu_remove() BUG: KASAN: invalid-access in mt76_rx_poll_complete+0x280/0x470 Call trace: dump_backtrace+0xec/0x128 show_stack+0x18/0x28 dump_stack_lvl+0x40/0xc8 print_report+0x1b8/0x710 kasan_report+0xe0/0x144 do_bad_area+0x120/0x260 do_tag_check_fault+0x20/0x34 do_mem_abort+0x54/0xa8 el1_abort+0x3c/0x5c el1h_64_sync_handler+0x40/0xcc el1h_64_sync+0x7c/0x80 mt76_rx_poll_complete+0x280/0x470 mt76_dma_rx_poll+0x114/0x51c mt792x_poll_rx+0x60/0xf8 napi_threaded_poll_loop+0xe0/0x450 napi_threaded_poll+0x80/0x9c kthread+0x11c/0x158 ret_from_fork+0x10/0x20",
    "evidence": "osv:CVE-2026-90380",
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            "value": "7.2.6",
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    "severity": "high",
    "structured": {
      "id": "CVE-2026-90380",
      "aliases": [
        "CVE-2026-90380"
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      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
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      ],
      "modified": "2026-10-28T02:30:38.040416179Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/217f9e7bb02558759be9d9ecfe532e9708741c50",
        "https://git.kernel.org/stable/c/2aa3d3b9fac9163e9226e35556607ae3f75be21e",
        "https://git.kernel.org/stable/c/aaf414bf81ab4b680580871784b0b929818188eb",
        "https://git.kernel.org/stable/c/b250943f3f8351385a17972bda001664a5c51008",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90380.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-90380",
        "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": 505434,
  "published_at": "2026-09-17T16:09:17.948+00:00"
}