From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f46.google.com (mail-wm1-f46.google.com [209.85.128.46]) (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 C34C73D7D87 for ; Tue, 21 Apr 2026 13:49:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776779375; cv=none; b=N9f8lh/K9GYL99qmqK+RIs48ff8LOOXB9QV4WR5b3dFaRLAGQ0fujVzc5BWYrKv026+py0NmqDNAhOPrwPavEBUU5wPfOufLW6XW8FmY7g0Y4+DNHpI0I+XvjL0qNChvKPGW1w2d2GrklsI7LAFqR6fD+3ev9f+hEUEU2iVPN0k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776779375; c=relaxed/simple; bh=C4CFfRMF+3s24k+rhrCDQR+uVdUTHr9rVtxeNjumJ48=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=T9cfG/L23sYxUlMs0UZrvai+bOOjfb75PRpHvzgSI5uxSp+Kn5yq0p/oBuEKHQ6TIYSHhkrdBcRoqDucX0ZUQG2l3mHHuPijp74Hc59a9pW+04ViViqEC2eov2m9mbvC5V/hjNTwHLCxLiFCF35DhkaAyb84k20kxtNVRRvgXTI= 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=dmlz6TXz; arc=none smtp.client-ip=209.85.128.46 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="dmlz6TXz" Received: by mail-wm1-f46.google.com with SMTP id 5b1f17b1804b1-488ab2db91aso57579075e9.3 for ; Tue, 21 Apr 2026 06:49:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776779372; x=1777384172; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=rOBaqxwAYj1dQn8NQqyR4iLTgA49hrzkake6CNNEDys=; b=dmlz6TXzJExaehm4AFO/VV8YW5qWFclnc+kWjcGu7MFWPuVvMhCOLMUmsodAerHUPZ 27B4elwj+cgt2cD89C3L8Y/hkHD6Da1S3JM29G97IskE1ji8yhxHq6HeIxmULQXdlXaM MaGuc5h7paxOM3ukvhfq7Sq1ktjiepe/9T6M1DDedAWPFn3hiSH9Fq1Q/jOJwFyFMA8z hdehKGYSa8eyGQg7SkBji8VTWMzVB3kZwS2iNPce+LT7rZHEKw3fZBpYgh5sovWztUek ntkQd07jDOEp6wsQ0hTuaE6kOmV5SOm61Jjby2KJL4U4I+tixT7Kw1nJOf7DuCaYJgM4 MIhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776779372; x=1777384172; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=rOBaqxwAYj1dQn8NQqyR4iLTgA49hrzkake6CNNEDys=; b=W4p4tUjS4+KzsndC3M5KZ32s2uj7wqKkyseqquAjwK7qEkFy+lIxXzX0EiYLdOy0rO Ao/eGpUXGyTURZ9VjJ5cFkNUr50lALV1FIwZJMk0emQcKP15D5cEbldVMr1UUfYM8Esc DDzyhh++iIQsGjxAlISB535EqclJuZJ/uSYyZkzGS1stMjRMMzbHgpp0I8x2GknfghpA XZu2D/AFOFW34YWtLEgdduhUt5DnuKHCB7OqHBWinnSkCpPeF8N60m+VIKzSaZHm4cAi jHZ4Do87CbziSuCb7ua9BZ1mZV6xVR7+3eMOqkmaNliIIz8vea4fsKOMCsJ4cSDgPrNI MChg== X-Forwarded-Encrypted: i=1; AFNElJ/9kCn0Htb9xm8z+ph72fvQsF/Dg+npEHzMQGI/FiZ8aRAk1k3W4APjvdDR8JCgpS+9U2nSP0H4zL/5dSM=@vger.kernel.org X-Gm-Message-State: AOJu0YyMa3yf5CRQBE8jJ6ZDO5ulnLo4rpojidCVHUEBHJcoeCQmcbKd i8AnzxFcYUO0SHPOla5eq6eXt/8FPBCD82FBf4DcKYwrS4j8KZNtxy3D4j/t X-Gm-Gg: AeBDiesWpsT5UUZP1ECmfb8EufOyPRaja+8frQsHQQyNbhsBI2cUSRoWbG7J6twbeD5 +inzVpoEFl+733HZqcLlJdarK5EoJakTXwGajCWRQXdVkWBirDFTOxmwNkAJJ58hYmqfKZcvTNi xxhWLKweFHtZ+yzGv95QzP8roC1XaK1uTyY1CnSizKxqFb3XspzlHM8BS50Z2e0LWs/1g6GaAHg 1GyoTjdluYT5U3vu5KWoVRtQ2RnoxuiHRQtax2lMqOG/W3em0jhQ7LbzIrNLVSfl0TnFbVX9e8z zMxSbsGfRmzfsirzA1Z2TA9U1L2Ahi7r9tHxWhQhnGsb09GVZu0kP6ktZ4izhZua5TrJnecWid7 P9Ld1nhAptKs+2GVSMfBfnMZw6CRlm1mbeGSK5Og/HIeaw70Dz0sexLQ3FqDUaYM4qyoh0RDLTR 6HGm855UruQtsGsw== X-Received: by 2002:a05:600c:3483:b0:486:fba7:b150 with SMTP id 5b1f17b1804b1-488fb7787d7mr240927445e9.15.1776779372074; Tue, 21 Apr 2026 06:49:32 -0700 (PDT) Received: from debian.. ([2001:41d0:303:db6b::]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4891c318636sm168157785e9.7.2026.04.21.06.49.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Apr 2026 06:49:31 -0700 (PDT) From: Tristan Madani To: Christian Lamparter Cc: Johannes Berg , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Tristan Madani Subject: [PATCH v3 2/3] wifi: carl9170: fix OOB read from off-by-two in TX status handler Date: Tue, 21 Apr 2026 13:49:27 +0000 Message-ID: <20260421134929.325662-3-tristmd@gmail.com> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260421134929.325662-1-tristmd@gmail.com> References: <20260421134929.325662-1-tristmd@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Tristan Madani The bounds check in carl9170_tx_process_status() uses `i > ((cmd->hdr.len / 2) + 1)` which is off by two, allowing 2 extra iterations past valid _tx_status entries when the firmware- controlled hdr.ext exceeds hdr.len/2. Fix by using the correct comparison `i >= (cmd->hdr.len / 2)`. Fixes: a84fab3cbfdc ("carl9170: 802.11 rx/tx processing and usb backend") Signed-off-by: Tristan Madani --- Changes in v3: - Regenerated from wireless-next with proper git format-patch to produce valid index hashes (v2 had post-processed index lines). Changes in v2: - No code changes from v1. drivers/net/wireless/ath/carl9170/tx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/wireless/ath/carl9170/tx.c b/drivers/net/wireless/ath/carl9170/tx.c index 59caf1e4b1589..06aaf281655b1 100644 --- a/drivers/net/wireless/ath/carl9170/tx.c +++ b/drivers/net/wireless/ath/carl9170/tx.c @@ -692,7 +692,7 @@ void carl9170_tx_process_status(struct ar9170 *ar, unsigned int i; for (i = 0; i < cmd->hdr.ext; i++) { - if (WARN_ON(i > ((cmd->hdr.len / 2) + 1))) { + if (WARN_ON(i >= (cmd->hdr.len / 2))) { print_hex_dump_bytes("UU:", DUMP_PREFIX_NONE, (void *) cmd, cmd->hdr.len + 4); break; -- 2.47.3