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35 lines
990 B
Diff
35 lines
990 B
Diff
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From 3e10986d1d698140747fcfc2761ec9cb64c1d582 Mon Sep 17 00:00:00 2001
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From: Eric Dumazet <edumazet@google.com>
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Date: Mon, 24 Sep 2012 07:00:11 +0000
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Subject: net: guard tcp_set_keepalive() to tcp sockets
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Its possible to use RAW sockets to get a crash in
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tcp_set_keepalive() / sk_reset_timer()
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Fix is to make sure socket is a SOCK_STREAM one.
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Reported-by: Dave Jones <davej@redhat.com>
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Signed-off-by: Eric Dumazet <edumazet@google.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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net/core/sock.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/net/core/sock.c b/net/core/sock.c
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index 3057920..a6000fb 100644
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--- a/net/core/sock.c
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+++ b/net/core/sock.c
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@@ -691,7 +691,8 @@ set_rcvbuf:
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case SO_KEEPALIVE:
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#ifdef CONFIG_INET
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- if (sk->sk_protocol == IPPROTO_TCP)
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+ if (sk->sk_protocol == IPPROTO_TCP &&
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+ sk->sk_type == SOCK_STREAM)
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tcp_set_keepalive(sk, valbool);
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#endif
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sock_valbool_flag(sk, SOCK_KEEPOPEN, valbool);
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--
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cgit v1.1
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