From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 5C6551EFFD9; Sun, 24 Mar 2024 23:10:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321802; cv=none; b=s2ApB6uD8udWn14HoP5do0QpomXSNu3us+t+pzOC6mZvZ9cr0/YpWsh9k0hKjArGCkxmdTH3KTg8BhXIsl+L7E7b2bUlf9GHbJcTidLEQ69q2y2W518c3JkMYBeGYR/oO9IIy+4XBKp4SM0zkO/4utW1Y/arAgyH35FpEeAM5kQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711321802; c=relaxed/simple; bh=dhKFxGipNUYb7+OZCcYXRa1jL6XDpWTD56tS1MNSVQM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fR6Li+O+ORlcJmxsUUzNlE8AcTtUa+jB+lWFNLPtwOycBWx1PGrCmgX1/jh1IpeQpVr/3HAS5lyiZNh2u7n6BzVOqdufh0VqO9OUsK+li8yDZ179pNohmK9bzw5Hez/4CVH/21XMt9N2krF1LrYcUHzegRcDb/5An2IqLNLMBUc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ZlHObspu; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ZlHObspu" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7CDB9C433F1; Sun, 24 Mar 2024 23:10:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1711321802; bh=dhKFxGipNUYb7+OZCcYXRa1jL6XDpWTD56tS1MNSVQM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ZlHObspuar9xzF7dqbYkLSdgAlsXPbItK9969+m3pFcfXzOn/RAW9TloCXkmxscC3 OT7EPNHw+Pkj56x7ocinsAiTckAoCagstWSosOISbByHCEcqWFzia1C33b/p+OOAPc fhcQLtjlt/z6YB0ix7yAISbwRv83FnkVytU3YReQpwc15N/Y9aUTk0aufZwo3UeyUd 3uuVP/41s8CPga3V5ll2+xYub6RHHRyf1Yv8dx+rzJEzsW1cSvBbEsNp+GTAU3cd4t KbSQboCC9caIRwGdkK8AULYU0qhRTOfHczuub06sonMlNNr1iJcGCGBwsSv3xDw2xG WNoU6fX2uW7PA== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Christophe JAILLET , Benjamin Coddington , Trond Myklebust , Sasha Levin Subject: [PATCH 6.6 530/638] net: sunrpc: Fix an off by one in rpc_sockaddr2uaddr() Date: Sun, 24 Mar 2024 18:59:27 -0400 Message-ID: <20240324230116.1348576-531-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240324230116.1348576-1-sashal@kernel.org> References: <20240324230116.1348576-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Christophe JAILLET [ Upstream commit d6f4de70f73a106986ee315d7d512539f2f3303a ] The intent is to check if the strings' are truncated or not. So, >= should be used instead of >, because strlcat() and snprintf() return the length of the output, excluding the trailing NULL. Fixes: a02d69261134 ("SUNRPC: Provide functions for managing universal addresses") Signed-off-by: Christophe JAILLET Reviewed-by: Benjamin Coddington Signed-off-by: Trond Myklebust Signed-off-by: Sasha Levin --- net/sunrpc/addr.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/net/sunrpc/addr.c b/net/sunrpc/addr.c index d435bffc61999..97ff11973c493 100644 --- a/net/sunrpc/addr.c +++ b/net/sunrpc/addr.c @@ -284,10 +284,10 @@ char *rpc_sockaddr2uaddr(const struct sockaddr *sap, gfp_t gfp_flags) } if (snprintf(portbuf, sizeof(portbuf), - ".%u.%u", port >> 8, port & 0xff) > (int)sizeof(portbuf)) + ".%u.%u", port >> 8, port & 0xff) >= (int)sizeof(portbuf)) return NULL; - if (strlcat(addrbuf, portbuf, sizeof(addrbuf)) > sizeof(addrbuf)) + if (strlcat(addrbuf, portbuf, sizeof(addrbuf)) >= sizeof(addrbuf)) return NULL; return kstrdup(addrbuf, gfp_flags); -- 2.43.0