From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f44.google.com (mail-wm1-f44.google.com [209.85.128.44]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7464423FC41 for ; Sat, 4 Apr 2026 13:37:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.44 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775309878; cv=none; b=WJ8mhS6qTyE4b3KjhSNBdeujE+toZ701wGM4VvgY3TvnbXQ9rORfYjHlOrMcyX+EA7/rkacxgK0tZY0tbdxaxBPzHPeSuegUrEyRM9EXmMfymCmnaxblaN+Kfc6VLZHtvYUQBC2ZaUkK4vGG8QoVwQdx18nCoc+X5XDb/Nq9UNY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775309878; c=relaxed/simple; bh=zPBgSdFmJzxodButczK1sWPzU+PemhkhYTagS+9CElk=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=UfBcoWBUJJAqx0QS6zqikIm101agk8qq31+a1Lp3Fl9jDoOqsVgxQgr2LJDx60DNbITuFCyeV4zlCzkuteAYQp5D+giX3iIgDyMIAtQHql25c6tpExB3a6NVWqFWMZZUT7ZViBgr2pbZ+t3cWM3w5zNSjbxUYCkf5sU4VAuCIBc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=c4G0CNEE; arc=none smtp.client-ip=209.85.128.44 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="c4G0CNEE" Received: by mail-wm1-f44.google.com with SMTP id 5b1f17b1804b1-488971db0fdso15780775e9.0 for ; Sat, 04 Apr 2026 06:37:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1775309876; x=1775914676; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=zPBgSdFmJzxodButczK1sWPzU+PemhkhYTagS+9CElk=; b=c4G0CNEEW15SQJ8jNgu6/8umDOUZB+1if/2/WMtheHKH71R4/yGXKAB23KU7pRHh4O gXNlMGJSWRUo+bpXQHskjyKusDRioC4+gHohjSD1I/MsHYlEumNHFPZMf8AEJp3Uaorx gvQUEGwK+hZU/h108IuKF60FiELMt6REjgu0rgCgHdqeWLdEyTyVXH6Qm2tx+KeMhzKK 9fIu87V371Aj/Yn5m5WR2ERGsI8TMSkLHgmqmBX3qCPnlG7CB2diWDM0tvLSO8NSfqsa EiWkIVMhU39s01ppXpbeI1w8SlESGOZ7sxMW9L9AmBmVtIdFok5iDPTSAM/5xn9rk+6s RcWQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1775309876; x=1775914676; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=zPBgSdFmJzxodButczK1sWPzU+PemhkhYTagS+9CElk=; b=I5qgjqFZVMORl1igah76yohy0xdpP9Y6vF/5ihIZ5+gfXKJix5GubSsCtDe62UJ+Ld eTxTYUHWkCyzDi7N8s4DRiebvCA1vIGoqrfPGDragco7TnL5ffUJ+x7I2BMq2FemtjTG ZsscxQOFqwLKcQbFAC8Ql8/c40uJaBASKJdD6wvvIJWtr/TW9AXQibtRPUv4TamQE6Qi l+60HH16fGQp+MAWka5kfFb0vauMWlW8ToA1PA0wG01UNAzih6f4d20IZoy6TpPEBlgm O83zsoffNqrA7dssWq0kWodYkB/dh3UdQbJHnSO1FMBmGM9h3Cywh6B+V7ue3VDX/f/9 Nveg== X-Forwarded-Encrypted: i=1; AJvYcCV28oVi5vqcE35/UQRfw1CwmnhIfhfPDvclXXi4a5PzA6d7ZY5CGP83e8BUPJdCG5TTciyd4QjvuDJCvV8=@vger.kernel.org X-Gm-Message-State: AOJu0Ywye50YDLs4R7pJpCfNmOkQcbFw6QtZPEFpUKkLsJ/E4YeXVzt6 ONA1iWFqfw9akIC8VBNLQ1KZEqIFDpE/vvGuKIcHmdgyUPE/q2Dk7BgZDBeV7g== X-Gm-Gg: AeBDietUowDsaggx+IluqPJyeo4XDw0ixgl+ubFZ69PwmHmf4Mi//hVNuYwVE4+HYXC VJgPNyGuHQ/BntvfZOAZdSm8Ybl3ZoCIrudlR33y0yAJC4eKJu7Tdul+0+oDo+Xf2logR/T8QsW GlOm5CWh+gFPq+k9m8f1lISzMrzR7TvCSFAdo73luCI412peKgz1bfg5RtwWQrUM2ybzC5U4UQj dClopxZdUl4L33e+Vl1OMhn5hz9HR78RNPEmq9nU15ZP+wD7rcnsuFhHMrebF1qQ0NtRJ2z/+cj W3Livg0X9Bb/CWzhez7/CnHRBpInY7yy+V5Y3a5LNFUJNNwp7W9D1JADrDuaUDLX7eAgO3ix8P4 nboLqLyJo+p3ImsbRn+RGffoLZ/dDKdBDDQ9bar+605Ll1vk+fNTN9hLYYVRrktX0gC8fXXooNa WrSNkSed8H0mWs3xRnYDXrUg== X-Received: by 2002:a05:600c:628e:b0:485:9a50:3384 with SMTP id 5b1f17b1804b1-488997da325mr93797135e9.25.1775309875418; Sat, 04 Apr 2026 06:37:55 -0700 (PDT) Received: from localhost.localdomain ([2a09:bac6:d6c7:268c::3d7:32]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4888a706062sm239655955e9.9.2026.04.04.06.37.54 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sat, 04 Apr 2026 06:37:55 -0700 (PDT) From: Zubeyr Almaho To: Jiri Kosina Cc: Zubeyr Almaho , Benjamin Tissoires , linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, security@kernel.org Subject: [PATCH v2 0/1] HID: add malicious HID device detection driver Date: Sat, 4 Apr 2026 16:37:44 +0300 Message-ID: <20260404133746.80914-1-zybo1000@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Hi Jiri, Benjamin, This series introduces hid-omg-detect, a passive HID monitor that scores potentially malicious keyboard-like USB devices (BadUSB / O.MG style) using: - keystroke timing entropy, - plug-and-type latency, - USB descriptor fingerprinting. When the configurable threshold is crossed, the module emits a warning with a userspace mitigation hint (usbguard). The driver does not block, delay, or modify HID input events. Changes since v1: - Replaced global list + mutex with per-device drvdata. - Removed logging inside spinlock-held regions. - Moved VID/PID lookup to probe() to avoid hot-path overhead. - Switched logging to hid_{info,warn,err} helpers. - Capped timing sample counter at MAX_TIMING_SAMPLES. - Renamed file to hid-omg-detect.c for kernel naming conventions. Thanks, Zubeyr Almaho --- drivers/hid/hid-omg-detect.c | 435 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 435 insertions(+)