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From ffe33dd788af80a6645ab62b1df8e8f215b8902a Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Thu, 25 Oct 2018 12:24:30 +0200
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Subject: [PATCH] ip-route: Fix parse_encap_seg6() srh parsing
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1602555
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Upstream Status: iproute2.git commit 3b5c5ef0a75a9
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commit 3b5c5ef0a75a9f685e78cd25da78706b5077bd83
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Author: Phil Sutter <phil@nwl.cc>
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Date: Thu Oct 18 15:44:14 2018 +0200
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ip-route: Fix parse_encap_seg6() srh parsing
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In case caller did not specify 'segs' parameter, parse_srh() would read
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garbage while iterating over 'segbuf'. Avoid this by initializing
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'segbuf' to an empty string.
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Fixes: e8493916a8ede ("iproute: add support for SR-IPv6 lwtunnel encapsulation")
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
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---
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ip/iproute_lwtunnel.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/ip/iproute_lwtunnel.c b/ip/iproute_lwtunnel.c
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index 85045d4..4ebfaa7 100644
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--- a/ip/iproute_lwtunnel.c
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+++ b/ip/iproute_lwtunnel.c
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@@ -494,7 +494,7 @@ static int parse_encap_seg6(struct rtattr *rta, size_t len, int *argcp,
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struct seg6_iptunnel_encap *tuninfo;
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struct ipv6_sr_hdr *srh;
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char **argv = *argvp;
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- char segbuf[1024];
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+ char segbuf[1024] = "";
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int argc = *argcp;
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int encap = -1;
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__u32 hmac = 0;
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--
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1.8.3.1
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