CVE-2026-46069 (GCVE-0-2026-46069)

Vulnerability from cvelistv5 – Published: 2026-05-27 12:57 – Updated: 2026-05-27 12:57
VLAI
Title
wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()
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.
Severity
No CVSS data available.
Assigner
Impacted products
Vendor Product Version
Linux Linux Affected: 4636187da60b6e33526050235c610409d9cc00e8 , < 11869ce402d95519d49b25a2a97741f68d69d103 (git)
Affected: 4636187da60b6e33526050235c610409d9cc00e8 , < 63fe3389b3e092d6c0eeea9fc0318e7918b16618 (git)
Affected: 4636187da60b6e33526050235c610409d9cc00e8 , < 4e179a60a60c0a5aea245e8e67768343c0f070b8 (git)
Affected: 4636187da60b6e33526050235c610409d9cc00e8 , < 030abbae49cf9fd1fba7aa08e15ec81efbeb78cf (git)
Affected: 4636187da60b6e33526050235c610409d9cc00e8 , < ae5e95d4157481693be2317e3ffcd84e36010cbb (git)
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Linux Linux Affected: 4.0
Unaffected: 0 , < 4.0 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.86 , ≤ 6.12.* (semver)
Unaffected: 6.18.27 , ≤ 6.18.* (semver)
Unaffected: 7.0.4 , ≤ 7.0.* (semver)
Unaffected: 7.1-rc1 , ≤ * (original_commit_for_fix)
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Show details on NVD website

{
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/net/wireless/marvell/mwifiex/init.c"
          ],
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          "vendor": "Linux",
          "versions": [
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              "version": "0",
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              "version": "6.12.86",
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            {
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              "status": "unaffected",
              "version": "6.18.27",
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              "status": "unaffected",
              "version": "7.0.4",
              "versionType": "semver"
            },
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              "status": "unaffected",
              "version": "7.1-rc1",
              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
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        {
          "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-27T12:57:50.213Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        },
        {
          "url": "https://git.kernel.org/stable/c/030abbae49cf9fd1fba7aa08e15ec81efbeb78cf"
        },
        {
          "url": "https://git.kernel.org/stable/c/ae5e95d4157481693be2317e3ffcd84e36010cbb"
        }
      ],
      "title": "wifi: mwifiex: fix use-after-free in mwifiex_adapter_cleanup()",
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        "engine": "bippy-1.2.0"
      }
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  },
  "cveMetadata": {
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    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46069",
    "datePublished": "2026-05-27T12:57:50.213Z",
    "dateReserved": "2026-05-13T15:03:33.095Z",
    "dateUpdated": "2026-05-27T12:57:50.213Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-05-29",
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  }
}


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