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 9E6D433E36A; Sat, 30 May 2026 17:27:25 +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=1780162046; cv=none; b=E1ELIKiKFr+6izZVYFNNTYHfSBn3+6pHlQLe3FuPddqgeejrs8K9QlxKTAJQinhrBZckLcDjHcpqakgukFQJR75Ktbb2eDmkQ0XvOSpiXKonbKfYH9kigNQW2qXePWKoxjtjGDRrRYecgb2jHXIouq4Bj0prxmN/FcPjOQN8Ql8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780162046; c=relaxed/simple; bh=dktG7vUzhn3jPisHLNDNKPJhE3DwuzFy527jxitmfBY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=pafTJ2wIORV/hJKrNFXNMsbuniZfcIsXQZrpTdHM0GRrmGRogDXY+PcLPolzRS9aNysQoSRnsOJFjl+Ig55nuy8r9+s5MIwUy6Bj4E5Q/of3VgdMGYGmqFZWucHWYbS0Fubr7CJyNbaGrFjTzIWRSXsZZ0rLspNUz6JHDp3snOQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=s+mceqYL; 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="s+mceqYL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E2DA61F00893; Sat, 30 May 2026 17:27:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1780162045; bh=fzo9zuoEKTIMrGQhyY9bDcuxKrKsAvpKjBz9lSVgTL4=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=s+mceqYLTkq1911W8hXAAiJxQHEh0Pb9A6BxGGEbC8I5MG39vWbFD//k6kwUuxkkC AtnpPH6t9ig0eni0MOQ3ao3KhYytcxVu9msi3urXAMC/M6McIUR4GmFJPJs5nkiZc/ 8C1XtGhR39S6Ds1deaRNVQDfrymYQYFUlC3PPMM0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yiming Qian , Herbert Xu Subject: [PATCH 6.1 805/969] crypto: af_alg - Cap AEAD AD length to 0x80000000 Date: Sat, 30 May 2026 18:05:29 +0200 Message-ID: <20260530160322.859980917@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260530160300.485627683@linuxfoundation.org> References: <20260530160300.485627683@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 6.1-stable review patch. If anyone has any objections, please let me know. ------------------ From: Herbert Xu commit e4c06479d7059888adf2f22bc1ebcf053bf691a2 upstream. In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data length to 0x80000000. Reported-by: Yiming Qian Fixes: 400c40cf78da ("crypto: algif - add AEAD support") Signed-off-by: Herbert Xu Signed-off-by: Greg Kroah-Hartman --- crypto/af_alg.c | 2 ++ 1 file changed, 2 insertions(+) --- a/crypto/af_alg.c +++ b/crypto/af_alg.c @@ -475,6 +475,8 @@ static int af_alg_cmsg_send(struct msghd if (cmsg->cmsg_len < CMSG_LEN(sizeof(u32))) return -EINVAL; con->aead_assoclen = *(u32 *)CMSG_DATA(cmsg); + if (con->aead_assoclen >= 0x80000000u) + return -EINVAL; break; default: