From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1794063367; b=mfpc5f5KE36/T0+gkdH+pM/Urt+Cjqwe/dtf6l4te48l4vOCBQ9aC7WeuCSJXlkh82A7 wc9N9GJwigCS0wIRV9MuE1OoPok2eaYVnIQBP7Lclcu5GRwBz1aSP4OqfiRxuMgdbq3Y3 PUocn2UyKRtr8lJynv2oehh3JkOwiD8xhPVZIe2ukxvn6dwyglzSMKIvjVXOTxqzb5mp0 yRcaj0GJZMRp9ysvkdGx29q4+CtAVzhE7ZbTGdU73HKvF8OtcQyve7a27PRmggUvt6bm8 V+0GssHspafubktNVkWW63XZUsnK2kaYin0cm/QzVVVSfM1lWd6bouqT1bLnNLqGoyg== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1794063367; h=Received:DKIM-Signature:From:To:Cc:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:User-Agent:X-stable:X-Patchwork-Hint: MIME-Version:Content-Type:Content-Transfer-Encoding; bh=UNPepNIpGXWll5W/XDnaYjnB/bGIa/j8KFDS2dLRjuc=; b=OaVqjv0Y3o/QkCrf3X9OncpoGryOAgXPlA9Uio88oAvxuWl22XsXLZod5DoSDKrpWrqP oVC+hBV0HVhNZyixW9MuNVp3Zxc6ELXbk2+QLXwKZ5XuYMkB+IbqKJG41IV5joVfQLpaW 8ZCMVyXn45/SfN9Pk4vOEKAhJ3XSele5N0dAYEBqwadEECEoIWK74/dwn80SW6b+UOjVs ZVZAe90VJMlSYa+588Ap/qpKZhH5ZAzKU61uAesbc2zmXYHUbBzkHNdLg3XHG15ewggji qLyH8lQUn7FLX9Oz0+YUU5zEWQS5auz2T139h9UwJeZwkPKV6E+BjXVbc8K89BJWacA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=mCd9AzoP; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5F518606D802; Sat, 7 Nov 2026 14:56:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=mCd9AzoP Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EB5E1F0089F; Sat, 7 Nov 2026 14:56:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1794063367; bh=UNPepNIpGXWll5W/XDnaYjnB/bGIa/j8KFDS2dLRjuc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=mCd9AzoPNrroSr2MEb0vaj99cgyogIk3IhRIlVDiU9mjbQPiO5Yf2G34rKnopTl8O HdsQjhJEQb8grKmg1TwHKeHfvQkJsBCT014i255jmLJOpHOuFwZO187FpmOa6iyBJd zX+DIzFacKDwtGY5+teQ3k7FG94vRDL+v7ZHt3ro= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Muhammad Bilal , =?UTF-8?q?Ilpo=20J=C3=A4rvinen?= , Sasha Levin Subject: [PATCH 6.18 544/869] platform/x86: hp-bioscfg: return -E2BIG from validate_password_input() Date: Sat, 7 Nov 2026 08:53:46 -0500 Message-ID: <20261107134911.846144774@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261107134852.069646174@linuxfoundation.org> References: <20261107134852.069646174@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: stable@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Muhammad Bilal [ Upstream commit a4f19c589b21e18567d3c0ac7b9294f81e29b1de ] validate_password_input() returns the positive INVALID_BIOS_AUTH on rejection. store_password_instance() skips the store on nonzero ret, but its final "return ret < 0 ? ret : count" treats the positive value as success, so userspace sees count instead of an error. Return -E2BIG for an invalid password length. Tested on HP EliteBook 840 G2 (Fedora 44, Linux 7.2.7): writing 999 bytes to current_password returned 999 before this change. Fixes: 8646a3b5ee3a ("platform/x86: hp-bioscfg: passwdobj-attributes") Cc: stable@vger.kernel.org Signed-off-by: Muhammad Bilal Link: https://lore.kernel.org/all/20261007134711.473857-1-meatuni001@gmail.com/ Link: https://patch.msgid.link/20261007134711.473857-4-meatuni001@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen Signed-off-by: Sasha Levin --- drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c index 6b94f90bea07a..43a2fd0c07db1 100644 --- a/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c +++ b/drivers/platform/x86/hp/hp-bioscfg/passwdobj-attributes.c @@ -70,12 +70,13 @@ static int validate_password_input(int instance_id, const char *buf) length--; if (length > MAX_PASSWD_SIZE) - return INVALID_BIOS_AUTH; + return -E2BIG; if (password_data->min_password_length > length || password_data->max_password_length < length) - return INVALID_BIOS_AUTH; - return SUCCESS; + return -E2BIG; + + return 0; } ATTRIBUTE_N_PROPERTY_SHOW(is_enabled, password); -- 2.53.0