1 files changed, 39 insertions, 0 deletions
diff --git a/programs/fuzz/fuzz_x509csr.c b/programs/fuzz/fuzz_x509csr.c
new file mode 100644
index 00000000000..7946e57eda0
--- /dev/null
+++ b/programs/fuzz/fuzz_x509csr.c
@@ -0,0 +1,39 @@
+#include <stdint.h>
+#include "mbedtls/x509_csr.h"
+
+int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size)
+{
+#ifdef MBEDTLS_X509_CSR_PARSE_C
+    int ret;
+    mbedtls_x509_csr csr;
+    unsigned char buf[4096];
+
+    mbedtls_x509_csr_init(&csr);
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+    psa_status_t status = psa_crypto_init();
+    if (status != PSA_SUCCESS) {
+        goto exit;
+    }
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+    ret = mbedtls_x509_csr_parse(&csr, Data, Size);
+#if !defined(MBEDTLS_X509_REMOVE_INFO)
+    if (ret == 0) {
+        ret = mbedtls_x509_csr_info((char *) buf, sizeof(buf) - 1, " ", &csr);
+    }
+#else
+    ((void) ret);
+    ((void) buf);
+#endif /* !MBEDTLS_X509_REMOVE_INFO */
+
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+exit:
+    mbedtls_psa_crypto_free();
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+    mbedtls_x509_csr_free(&csr);
+#else
+    (void) Data;
+    (void) Size;
+#endif
+
+    return 0;
+}