{
  "cveId": "CVE-2026-23281",
  "url": "https://patchblox.com/security/cve/CVE-2026-23281",
  "summary": "CVE-2026-23281 is fixed in 50 products on 1 platform, first by DEBIAN-CVE-2026-23281, released March 25, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "wifi: libertas: fix use-after-free in lbs_free_adapter()",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  wifi: libertas: fix use-after-free in lbs_free_adapter()  The lbs_free_adapter() function uses timer_delete() (non-synchronous) for both command_timer and tx_lockup_timer before the structure is freed. This is incorrect because timer_delete() does not wait for any running timer callback to complete.  If a timer callback is executing when lbs_free_adapter() is called, the callback will access freed memory since lbs_cfg_free() frees the containing structure immediately after lbs_free_adapter() returns.  Both timer callbacks (lbs_cmd_timeout_handler and lbs_tx_lockup_handler) access priv-\u003Edriver_lock, priv-\u003Ecur_cmd, priv-\u003Edev, and other fields, which would all be use-after-free violations.  Use timer_delete_sync() instead to ensure any running timer callback has completed before returning.  This bug was introduced in commit 8f641d93c38a (\u0022libertas: detect TX lockups and reset hardware\u0022) where del_timer() was used instead of del_timer_sync() in the cleanup path. The command_timer has had the same issue since the driver was first written.",
  "published": "2026-03-25T11:16:22Z",
  "severity": "Important",
  "cvss": 7.8,
  "cvssVector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss": 0.00133,
  "epssPercentile": 0.02841,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-23281",
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