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=1793208377; b=zuR5EOdC8enmy4pFpya8niF9lACqqAv4h8YYvEyRm7ZRD0GrhXYQyGCdYRXEzYHtwMXg YWbUmjzYt0YtFqveNrmJvTnVe916oTWusXvSaCdGtjbibWnBgsDdyxLNJf90UFAD9MzyY a311lHKPVRUNha+1jiN7JuHzraveLLSK6x1VzkZccYliMAU4vpuFQCwkwoDODdktCfRN6 tUZJWofCqxxhzmCT7s/rPL1IDBEhtA2jG96/4XdA9YCnh7ps2bMgT9p/30PcqDfasrPlo TMyOO1RJ4MI/vvIg/64335GB8iWsXpDWmBgGi1p89TxlfnVB9x/tCWhbKijh8/FN3JQ== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793208377; 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-Transfer-Encoding; bh=wfYD7dXa1ZMkX5wp0bCb5Z7cvkSsWmEy1gRCBL7r9jo=; b=rDzAE8toB0V3xM4BLEtMNEhcmwHwx7VKEz5IXrIlhPEdRHOseCJWFuIISOuyptGgOLcj RO7EjHsIr57LDcOPh9rwG1eq3Fb7XOc+hsndIugQC6i4yCZbBAPRu0QRXWHy+IoAYNfXR c8WiKuf6NfeywUf3iej9lMtIHnMVRI0zm2g4Mg2WsOOUtV1S6F38Q9BLxAze66yJKsI9i jM1z9qOSprD8i1IXC3k4w/jwc0Vp4ad67rTotUkobScF79WWF5CzAnOQ6tjH8I/IMQyuv 6kmCQwSkFFn5HJNb2gx1LAX2NYuzBMsNwwX5LoBIL4hXqFzJwvcC6TCSBP9183Y+2Aw== 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="vMI1tz/2"; 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 A2140606A31A; Wed, 28 Oct 2026 17:26:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=vMI1tz/2 Received: by smtp.kernel.org (Postfix) with ESMTPSA id E4AF61F01828; Wed, 28 Oct 2026 17:26:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793208377; bh=wfYD7dXa1ZMkX5wp0bCb5Z7cvkSsWmEy1gRCBL7r9jo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=vMI1tz/2RAI6iqlIoySmHc3kC2LhfCqbdy9MLLwOFyyVGYeR9a/bhKj3cwAmKzJDO JSjU0zUktGLPyzCljcfX4r1z8H+oHXjftlKp16RCIhCyA9l43k/3HO+VY6dtMoVvx0 yV8bICY74UJw0gGMww9VLF9Tfdo5mDdfSfRL+xaA= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Luis Chamberlain , Kees Cook , Andy Shevchenko , Sasha Levin Subject: [PATCH 5.10 055/516] params: Use size_add() for kmalloc() Date: Wed, 28 Oct 2026 17:53:27 +0100 Message-ID: <20261028170004.832761899@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170003.522232767@linuxfoundation.org> References: <20261028170003.522232767@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore X-Mailing-List: patches@lists.linux.dev List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Andy Shevchenko [ Upstream commit 0fc79cbc937f2a754a302a710a94b68c61d0a89a ] Prevent allocations from integer overflow by using size_add(). Reviewed-by: Luis Chamberlain Reviewed-by: Kees Cook Signed-off-by: Andy Shevchenko Link: https://lore.kernel.org/r/20231120151419.1661807-4-andriy.shevchenko@linux.intel.com Signed-off-by: Kees Cook Stable-dep-of: 3dfaae04243c ("params: fix charp corruption on allocation failure") Signed-off-by: Sasha Levin --- kernel/params.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/kernel/params.c b/kernel/params.c index 30c0a7388024e..b930d3a4677cc 100644 --- a/kernel/params.c +++ b/kernel/params.c @@ -11,6 +11,7 @@ #include #include #include +#include #include #include #include @@ -48,7 +49,7 @@ static void *kmalloc_parameter(unsigned int size) { struct kmalloced_param *p; - p = kmalloc(sizeof(*p) + size, GFP_KERNEL); + p = kmalloc(size_add(sizeof(*p), size), GFP_KERNEL); if (!p) return NULL; -- 2.53.0