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A buggy or malicious switch could send a role status message with a bad
reason code, which if printed by OVS would cause it to abort. This fixes
the problem.
CVE: CVE-2017-9263
Upstream-Status: Submitted
Reported-by: Bhargava Shastry <bshastry at sec.t-labs.tu-berlin.de>
Signed-off-by: Ben Pfaff <blp at ovn.org>
---
lib/ofp-print.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/ofp-print.c b/lib/ofp-print.c
index 7ca953100539..1932baf4871f 100644
--- a/lib/ofp-print.c
+++ b/lib/ofp-print.c
@@ -2147,7 +2147,8 @@ ofp_print_role_status_message(struct ds *string, const struct ofp_header *oh)
break;
case OFPCRR_N_REASONS:
default:
- OVS_NOT_REACHED();
+ ds_put_cstr(string, "(unknown)");
+ break;
}
}
--
2.10.2
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