FKIE_CVE-2026-46069

Vulnerability from fkie_nvd - Published: 2026-05-27 14:17 - Updated: 2026-05-27 14:48
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup() The mwifiex_adapter_cleanup() function uses timer_delete() (non-synchronous) for the wakeup_timer before the adapter structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete. If the wakeup_timer callback (wakeup_timer_fn) is executing when mwifiex_adapter_cleanup() is called, the callback will continue to access adapter fields (adapter->hw_status, adapter->if_ops.card_reset, etc.) which may be freed by mwifiex_free_adapter() called later in the mwifiex_remove_card() path. Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cf
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/11869ce402d95519d49b25a2a97741f68d69d103
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4e179a60a60c0a5aea245e8e67768343c0f070b8
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/63fe3389b3e092d6c0eeea9fc0318e7918b16618
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ae5e95d4157481693be2317e3ffcd84e36010cbb
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{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()\n\nThe mwifiex_adapter_cleanup() function uses timer_delete()\n(non-synchronous) for the wakeup_timer before the adapter structure is\nfreed. This is incorrect because timer_delete() does not wait for any\nrunning timer callback to complete.\n\nIf the wakeup_timer callback (wakeup_timer_fn) is executing when\nmwifiex_adapter_cleanup() is called, the callback will continue to\naccess adapter fields (adapter-\u003ehw_status, adapter-\u003eif_ops.card_reset,\netc.) which may be freed by mwifiex_free_adapter() called later in the\nmwifiex_remove_card() path.\n\nUse timer_delete_sync() instead to ensure any running timer callback has\ncompleted before returning."
    }
  ],
  "id": "CVE-2026-46069",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:28.170",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cf"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/11869ce402d95519d49b25a2a97741f68d69d103"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4e179a60a60c0a5aea245e8e67768343c0f070b8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/63fe3389b3e092d6c0eeea9fc0318e7918b16618"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ae5e95d4157481693be2317e3ffcd84e36010cbb"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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