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 19AD11A2564; Thu, 15 Aug 2024 13:32:51 +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=1723728772; cv=none; b=o6fjukDbt25lxiXq7EKOV1wd1iQCcUKCmPQjfD2Zvrnaa34R9bNDLEQXO+AGTgPPWV8pavAaWw3oUspyVG9uQagOWso/kwFQi/awotx5LQqK6Pi1v0c109/LCBUcSEMR3zpG1u7ll/wlARC35rg5L7tbMEJmqRFUZE+16giwnOM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723728772; c=relaxed/simple; bh=DANKfrVSBRDYs7LpruvSwhbW00j75qypBKgOuT8oHiQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CSFXDvJU62A4z1lkzy8AFrcxYz6e5mw9BB4MNZWBenlESdq74+d0Ci1S61/ubCpPnlgwoIM3389BFz2OxPEhNcs4r27NsOosi9XKDxE2lUyPMNYDCHhEXx5T08jnDmeKyxNPe0E20D+XsQ3yShlJr357U3osbY6y1EubLJ/e+xU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=nWf0O8gD; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="nWf0O8gD" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1E5EEC32786; Thu, 15 Aug 2024 13:32:50 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1723728771; bh=DANKfrVSBRDYs7LpruvSwhbW00j75qypBKgOuT8oHiQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nWf0O8gDbkMCtWaVbhTXefukXX1Y7LhicIDPHIQCWQdYleWhFGBjnVL4l75w+o7T4 74u0o6L5VLBaV4FSw5mbpPtPN149aoo41Cn/QEUnMz9K7DswcUvPOBn38GQOJFmiD8 ykfEyGcAXuWg9AXLZNl8WPNFFSD7ynM4NpvsBecg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Shigeru Yoshida , Tung Nguyen , "David S. Miller" , Sasha Levin Subject: [PATCH 4.19 104/196] tipc: Return non-zero value from tipc_udp_addr2str() on error Date: Thu, 15 Aug 2024 15:23:41 +0200 Message-ID: <20240815131856.061620881@linuxfoundation.org> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20240815131852.063866671@linuxfoundation.org> References: <20240815131852.063866671@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 4.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Shigeru Yoshida [ Upstream commit fa96c6baef1b5385e2f0c0677b32b3839e716076 ] tipc_udp_addr2str() should return non-zero value if the UDP media address is invalid. Otherwise, a buffer overflow access can occur in tipc_media_addr_printf(). Fix this by returning 1 on an invalid UDP media address. Fixes: d0f91938bede ("tipc: add ip/udp media type") Signed-off-by: Shigeru Yoshida Reviewed-by: Tung Nguyen Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- net/tipc/udp_media.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index 1d62354797061..796309b50bb6a 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -127,8 +127,11 @@ static int tipc_udp_addr2str(struct tipc_media_addr *a, char *buf, int size) snprintf(buf, size, "%pI4:%u", &ua->ipv4, ntohs(ua->port)); else if (ntohs(ua->proto) == ETH_P_IPV6) snprintf(buf, size, "%pI6:%u", &ua->ipv6, ntohs(ua->port)); - else + else { pr_err("Invalid UDP media address\n"); + return 1; + } + return 0; } -- 2.43.0