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| author | Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> | 2020-06-24 23:34:18 +0300 |
|---|---|---|
| committer | Sasha Levin <sashal@kernel.org> | 2020-06-30 22:36:45 +0300 |
| commit | dc43f7e807a8bd9cc7deecf1980fcb3349477646 (patch) | |
| tree | 08a7f782adbaa03b353810ca04d87f7ca8b32344 /include | |
| parent | fea864489c90a07e7e84f8f6f5c531b313ad6593 (diff) | |
| download | linux-dc43f7e807a8bd9cc7deecf1980fcb3349477646.tar.xz | |
sctp: Don't advertise IPv4 addresses if ipv6only is set on the socket
[ Upstream commit 471e39df96b9a4c4ba88a2da9e25a126624d7a9c ]
If a socket is set ipv6only, it will still send IPv4 addresses in the
INIT and INIT_ACK packets. This potentially misleads the peer into using
them, which then would cause association termination.
The fix is to not add IPv4 addresses to ipv6only sockets.
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Tested-by: Corey Minyard <cminyard@mvista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/sctp/constants.h | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h index 823afc42a3aa..06e1deeef464 100644 --- a/include/net/sctp/constants.h +++ b/include/net/sctp/constants.h @@ -341,11 +341,13 @@ enum { ipv4_is_anycast_6to4(a)) /* Flags used for the bind address copy functions. */ -#define SCTP_ADDR6_ALLOWED 0x00000001 /* IPv6 address is allowed by +#define SCTP_ADDR4_ALLOWED 0x00000001 /* IPv4 address is allowed by local sock family */ -#define SCTP_ADDR4_PEERSUPP 0x00000002 /* IPv4 address is supported by +#define SCTP_ADDR6_ALLOWED 0x00000002 /* IPv6 address is allowed by + local sock family */ +#define SCTP_ADDR4_PEERSUPP 0x00000004 /* IPv4 address is supported by peer */ -#define SCTP_ADDR6_PEERSUPP 0x00000004 /* IPv6 address is supported by +#define SCTP_ADDR6_PEERSUPP 0x00000008 /* IPv6 address is supported by peer */ /* Reasons to retransmit. */ |