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-rw-r--r--src/lib/tls/tls_ciphersuite.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/tls/tls_ciphersuite.cpp b/src/lib/tls/tls_ciphersuite.cpp
index a15f936be..08ef8e812 100644
--- a/src/lib/tls/tls_ciphersuite.cpp
+++ b/src/lib/tls/tls_ciphersuite.cpp
@@ -45,7 +45,7 @@ Ciphersuite Ciphersuite::by_id(u16bit suite)
const std::vector<Ciphersuite>& all_suites = all_known_ciphersuites();
auto s = std::lower_bound(all_suites.begin(), all_suites.end(), suite);
- if(s->ciphersuite_code() == suite)
+ if(s != all_suites.end() && s->ciphersuite_code() == suite)
{
return *s;
}