From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6A59F4502F; Tue, 16 Jun 2026 16:53:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781628785; cv=none; b=uH7oS6bFICyttQhLDRBG5YxSrKNOWV+yLtjQLxSwLgNoU5Udt4RVrwNIVz1lj6SV66YY8ihbpJvGDtlO5ligb9WVH/t/PBix5NjDBL8m9a9zWceFBQCBfzrODAEOHmyGKYWY5vtQfNER3SR/zClmicHcerAEhZqtvrfGGxMzNYQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781628785; c=relaxed/simple; bh=ePOGGGUvdwO+M/P5W+yNNQ76qo/43BbBKU/dE9dhY38=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sXc9smINeuN2rkA+VBJ//YbIJ/LUViWwfhgjkIsdCsMLlt6skhQciqSzzl/i3TyNGoWtAyljEbUHIaDLeAI/SNkVU/VGnbxJIkMlHqUnBRRDDOlqC8J5R9COftJFB53RQMw9qDys+04OsnLyGdfUWdVej0wWXY9Exeqctr/iWpA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=rsLL4K/H; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="rsLL4K/H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 33BF41F000E9; Tue, 16 Jun 2026 16:53:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1781628784; bh=XhMymvyHan5/NBN4pgxXMdzjn46vI963lypASt1TDZc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=rsLL4K/HgpKH+uxFmfaoslE+PZMbrbyecY0KdQmrTAdQ/z4/Q4egZT6C0FChAOZ+u iqHoxhzRiB1z9W/laN1WZFF1UowdOs3n9R1U1c611ZyeHo2wZZgcg/25FEEf1w1ysV 9AXRiFvGQy7lz7TAcKp5KM9AILb1DPhow4fidwGY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Johan Hovold Subject: [PATCH 6.6 162/452] USB: serial: keyspan: fix missing indat transfer sanity check Date: Tue, 16 Jun 2026 20:26:29 +0530 Message-ID: <20260616145126.297310187@linuxfoundation.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260616145117.796205997@linuxfoundation.org> References: <20260616145117.796205997@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Johan Hovold commit ab8336a7e414f018430aa1af3a46944032f7ff96 upstream. Add the missing sanity check on the size of usa49wg indat transfers to avoid parsing stale or uninitialised slab data. Fixes: 0ca1268e109a ("USB Serial Keyspan: add support for USA-49WG & USA-28XG") Cc: stable@vger.kernel.org # 2.6.23 Reviewed-by: Greg Kroah-Hartman Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/keyspan.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/drivers/usb/serial/keyspan.c +++ b/drivers/usb/serial/keyspan.c @@ -1188,6 +1188,10 @@ static void usa49wg_indat_callback(struc len = 0; while (i < urb->actual_length) { + if (urb->actual_length - i < 3) { + dev_warn_ratelimited(&urb->dev->dev, "malformed indat packet\n"); + break; + } /* Check port number from message */ if (data[i] >= serial->num_ports) {