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=1793210532; b=NqiG4TN2JJ3FTFvYKuyFAVXLxhfCo0ZQHl7LFc5lIXfe9iCfvSElGtMzgKOrtAR7Gxqd QpEzepvxO9Ijtbo8pAr8ysyBvstuEW0E8FbEgvzPlMf8/Z7z7oPzK7h9PWJksKiIalfR4 u26y/XsYNcvBJ+bJNg52dahITsNQGPa7M29fbX9UcWQupm4NgTJkRqvJdf5FD41LtCpZC 9PJwzWxv817w3qdE/cyaOlaTYqbiZlrAxFTJmGWKANrtazy2uklmBGLOQCWP192u7v5s7 uTmwSpDZidvbwDbHKr/w6pJ/4MmDmm27PCxAv5IxDw8kPBKHu4S96dRGbodHoacVM/A== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793210532; 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=70zlAzhjuLnuGurE7xJWYsovYM/QZMbvkHZBGKl05fc=; b=smAb9NrGtqGYtAxax++jov5cVSus0n9tnNfz635AkO4OfpkByEgz+GH021anHRNXvwDz 0+I9wsP/Pg4s47D3Xy3f87F48GKywiXLxuoIH/kMF+fBjMyT9TyVtiDp1T9XgJ8DutmEg sYmPX5FODUX9YhVS02awOl5D8fxqzJcgRmtw6mvmXbdrE0XxIUHpiJgpeElzQT8zP1lDl bBfsFC7ojrmWbS9HNaQ9K3hMMx0NRtefwECleaDVR2FiPW5BToT05puvOX1z3x5SrQe+h e+TI4i7DpwGQYxIjgDnsW8oMqvrBIu1t0Q9nUKMqcI5cUCMyHFVfQ4rBh9Ay31+ioVA== 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=qoak8C2D; 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 498A2606A31C; Wed, 28 Oct 2026 18:02:12 +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=qoak8C2D Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99B961F01825; Wed, 28 Oct 2026 18:02:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1793210532; bh=70zlAzhjuLnuGurE7xJWYsovYM/QZMbvkHZBGKl05fc=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=qoak8C2Dh32Z2D8fci2njbNCkgY9JwrwM0FuSwN6iW7VTH6f3Gz37H8QzARDRZ85Q rUfI+L4F/4qYW47u7eF84GCDfmO+ifJ4tKrhWRp750r/2N3pafVxatlD4YLNi+W9f0 kBnpoA1x7dPwzSwd6DPzHks4yLZkeyMX4UXdaeOc= 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 5.15 059/571] params: Use size_add() for kmalloc() Date: Wed, 28 Oct 2026 17:53:26 +0100 Message-ID: <20261028170009.427318269@linuxfoundation.org> X-Mailer: git-send-email 2.56.0 In-Reply-To: <20261028170008.009143722@linuxfoundation.org> References: <20261028170008.009143722@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 5.15-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 55541483d6d36..0139fe38d0b2a 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