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-rw-r--r--src/cryptography/hazmat/backends/openssl/backend.py1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/cryptography/hazmat/backends/openssl/backend.py b/src/cryptography/hazmat/backends/openssl/backend.py
index 637b28cc..56096811 100644
--- a/src/cryptography/hazmat/backends/openssl/backend.py
+++ b/src/cryptography/hazmat/backends/openssl/backend.py
@@ -216,6 +216,7 @@ def _encode_subject_alt_name(backend, san):
backend._ffi.NULL, data_ptr_ptr, len(alt_name.value)
)
if value == backend._ffi.NULL:
+ backend._consume_errors()
raise ValueError("Invalid ASN.1 data")
other_name.type_id = type_id
other_name.value = value