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From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: "Xin Long" <lucien.xin@gmail.com>, Sérgio <surkamp@gmail.com>,
	"Marcelo Ricardo Leitner" <marcelo.leitner@gmail.com>,
	"David S . Miller" <davem@davemloft.net>,
	"Sasha Levin" <sashal@kernel.org>,
	linux-sctp@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH AUTOSEL 4.9 3/7] sctp: move 198 addresses from unusable to private scope
Date: Thu, 22 Jul 2021 23:59:02 -0400	[thread overview]
Message-ID: <20210723035906.532444-3-sashal@kernel.org> (raw)
In-Reply-To: <20210723035906.532444-1-sashal@kernel.org>

From: Xin Long <lucien.xin@gmail.com>

[ Upstream commit 1d11fa231cabeae09a95cb3e4cf1d9dd34e00f08 ]

The doc draft-stewart-tsvwg-sctp-ipv4-00 that restricts 198 addresses
was never published. These addresses as private addresses should be
allowed to use in SCTP.

As Michael Tuexen suggested, this patch is to move 198 addresses from
unusable to private scope.

Reported-by: Sérgio <surkamp@gmail.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/net/sctp/constants.h | 4 +---
 net/sctp/protocol.c          | 3 ++-
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 8890fd66021d..9799c300603a 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -344,8 +344,7 @@ typedef enum {
 } sctp_scope_policy_t;
 
 /* Based on IPv4 scoping <draft-stewart-tsvwg-sctp-ipv4-00.txt>,
- * SCTP IPv4 unusable addresses: 0.0.0.0/8, 224.0.0.0/4, 198.18.0.0/24,
- * 192.88.99.0/24.
+ * SCTP IPv4 unusable addresses: 0.0.0.0/8, 224.0.0.0/4, 192.88.99.0/24.
  * Also, RFC 8.4, non-unicast addresses are not considered valid SCTP
  * addresses.
  */
@@ -353,7 +352,6 @@ typedef enum {
 	((htonl(INADDR_BROADCAST) == a) ||  \
 	 ipv4_is_multicast(a) ||	    \
 	 ipv4_is_zeronet(a) ||		    \
-	 ipv4_is_test_198(a) ||		    \
 	 ipv4_is_anycast_6to4(a))
 
 /* Flags used for the bind address copy functions.  */
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index b2c242facf1b..b1932fd125da 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -413,7 +413,8 @@ static sctp_scope_t sctp_v4_scope(union sctp_addr *addr)
 		retval = SCTP_SCOPE_LINK;
 	} else if (ipv4_is_private_10(addr->v4.sin_addr.s_addr) ||
 		   ipv4_is_private_172(addr->v4.sin_addr.s_addr) ||
-		   ipv4_is_private_192(addr->v4.sin_addr.s_addr)) {
+		   ipv4_is_private_192(addr->v4.sin_addr.s_addr) ||
+		   ipv4_is_test_198(addr->v4.sin_addr.s_addr)) {
 		retval = SCTP_SCOPE_PRIVATE;
 	} else {
 		retval = SCTP_SCOPE_GLOBAL;
-- 
2.30.2


  parent reply	other threads:[~2021-07-23  4:01 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-23  3:59 [PATCH AUTOSEL 4.9 1/7] net/802/mrp: fix memleak in mrp_request_join() Sasha Levin
2021-07-23  3:59 ` [PATCH AUTOSEL 4.9 2/7] net/802/garp: fix memleak in garp_request_join() Sasha Levin
2021-07-23  3:59 ` Sasha Levin [this message]
2021-07-23  3:59 ` [PATCH AUTOSEL 4.9 4/7] hfs: add missing clean-up in hfs_fill_super Sasha Levin
2021-07-23  3:59 ` [PATCH AUTOSEL 4.9 5/7] hfs: fix high memory mapping in hfs_bnode_read Sasha Levin
2021-07-23  3:59 ` [PATCH AUTOSEL 4.9 6/7] hfs: add lock nesting notation to hfs_find_init Sasha Levin
2021-07-23  3:59 ` [PATCH AUTOSEL 4.9 7/7] ARM: dts: versatile: Fix up interrupt controller node names Sasha Levin
2021-07-23  3:59   ` Sasha Levin

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