diff --git a/tests/suites/test_suite_x509parse.data b/tests/suites/test_suite_x509parse.data
index 5412c6c..5e73613 100644
--- a/tests/suites/test_suite_x509parse.data
+++ b/tests/suites/test_suite_x509parse.data
@@ -1038,47 +1038,65 @@
 X509 Certificate ASN1 (TBSCertificate, no version tag, serial missing)
 x509parse_crt:"3003300100":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 Certificate ASN1 (TBSCertificate, invalid version tag)
-x509parse_crt:"30053003a00101":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+X509 Certificate ASN1 (TBSCertificate, valid outer version tag, no outer length)
+x509parse_crt:"30163001a0300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_FORMAT + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, valid version tag, no length)
-x509parse_crt:"30053003a00102":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, invalid inner version tag)
+x509parse_crt:"30183003a00101300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
-X509 Certificate ASN1 (TBSCertificate, valid version tag, invalid length)
-x509parse_crt:"30163014a012021000000000000000000000000000000000":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+X509 Certificate ASN1 (TBSCertificate, valid inner version tag, no inner length)
+x509parse_crt:"30183003a00102300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, valid version tag, no serial)
-x509parse_crt:"30073005a003020104":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+X509 Certificate ASN1 (TBSCertificate, valid inner version tag, invalid inner length encoding)
+x509parse_crt:"30193004a0020285300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_INVALID_LENGTH
 
-X509 Certificate ASN1 (TBSCertificate, invalid length version tag)
-x509parse_crt:"30083006a00402010400":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+X509 Certificate ASN1 (TBSCertificate, valid inner version tag, inner length too large for int)
+x509parse_crt:"30293014a012021000000000000000000000000000000000300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_INVALID_LENGTH
+
+X509 Certificate ASN1 (TBSCertificate, valid inner version tag, inner vs. outer length mismatch)
+x509parse_crt:"301b3006a00402010200300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+
+X509 Certificate ASN1 (TBSCertificate, valid version tag, length exceeds TBS)
+x509parse_crt:"30293014a012021100000000000000000000000000000000300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_VERSION + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+
+X509 Certificate ASN1 (TBSCertificate, valid version tag + length, unknown version number 3)
+x509parse_crt:"308196308180a0030201038204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
+
+X509 Certificate ASN1 (TBSCertificate, valid version tag + length, unknown version number 4)
+x509parse_crt:"308196308180a0030201048204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
+
+X509 Certificate ASN1 (TBSCertificate, valid version tag + length, version number overflow)
+x509parse_crt:"308199308183a00602047FFFFFFF8204deadbeef300d06092a864886f70d01010b0500300c310a30080600130454657374301c170c303930313031303030303030170c303931323331323335393539300c310a30080600130454657374302a300d06092A864886F70D010101050003190030160210ffffffffffffffffffffffffffffffff0202ffff300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
+
+X509 Certificate ASN1 (TBSCertificate, serial missing)
+x509parse_crt:"301a3005a003020102300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
 X509 Certificate ASN1 (TBSCertificate, incorrect serial tag)
-x509parse_crt:"30083006a00302010400":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+x509parse_crt:"301b3006a00302010200300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
 X509 Certificate ASN1 (TBSCertificate, incorrect serial length)
-x509parse_crt:"30083006a00302010482":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+x509parse_crt:"301b3006a00302010282300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_SERIAL + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
 X509 Certificate ASN1 (TBSCertificate, correct serial, no alg)
-x509parse_crt:"300d300ba0030201048204deadbeef":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+x509parse_crt:"3020300ba0030201028204deadbeef300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
-X509 Certificate ASN1 (TBSCertificate, correct serial, no alg oid)
-x509parse_crt:"300e300ca0030201048204deadbeef00":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
+X509 Certificate ASN1 (TBSCertificate, correct serial, no alg oid tag)
+x509parse_crt:"3021300ca0030201028204deadbeef00300d06092a864886f70d01010b0500030200ff":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG
 
 X509 Certificate ASN1 (TBSCertificate, alg oid no data in sequence)
-x509parse_crt:"300f300da0030201048204deadbeef3000":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+x509parse_crt:"300f300da0030201028204deadbeef3000":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
 X509 Certificate ASN1 (TBSCertificate, alg with params)
-x509parse_crt:"30163014a0030201048204deadbeef30070604cafed00d01":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
+x509parse_crt:"30163014a0030201028204deadbeef30070604cafed00d01":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_OUT_OF_DATA
 
 X509 Certificate ASN1 (TBSCertificate, correct alg data, no params unknown version)
-x509parse_crt:"30153013a0030201048204deadbeef30060604cafed00d":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
+x509parse_crt:"30153013a0030201028204deadbeef30060604cafed00d":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
 
 X509 Certificate ASN1 (TBSCertificate, correct alg data, unknown version)
-x509parse_crt:"30173015a0030201048204deadbeef30080604cafed00d0500":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
+x509parse_crt:"30173015a0030201028204deadbeef30080604cafed00d0500":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
 
 X509 Certificate ASN1 (TBSCertificate, correct alg data, length mismatch)
-x509parse_crt:"30183016a0030201048204deadbeef30090604cafed00d050000":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
+x509parse_crt:"30183016a0030201028204deadbeef30090604cafed00d050000":"":MBEDTLS_ERR_X509_INVALID_ALG + MBEDTLS_ERR_ASN1_LENGTH_MISMATCH
 
 X509 Certificate ASN1 (TBSCertificate, correct alg, unknown alg_id)
 x509parse_crt:"30173015a0030201028204deadbeef30080604cafed00d0500":"":MBEDTLS_ERR_X509_UNKNOWN_SIG_ALG + MBEDTLS_ERR_OID_NOT_FOUND
@@ -1362,12 +1380,6 @@
 depends_on:MBEDTLS_ECDSA_C:MBEDTLS_ECP_DP_SECP192R1_ENABLED:MBEDTLS_SHA1_C:MBEDTLS_RSA_C
 x509parse_crt:"3081e430819f020104300d06092a864886f70d0101050500300f310d300b0603550403130454657374301e170d3133303731303135303233375a170d3233303730383135303233375a300f310d300b06035504031304546573743049301306072a8648ce3d020106082a8648ce3d03010103320004e962551a325b21b50cf6b990e33d4318fd16677130726357a196e3efe7107bcb6bdc6d9db2a4df7c964acfe81798433d300d06092a864886f70d01010505000331001a6c18cd1e457474b2d3912743f44b571341a7859a0122774a8e19a671680878936949f904c9255bdd6fffdb33a7e6d8":"cert. version     \: 1\nserial number     \: 04\nissuer name       \: CN=Test\nsubject name      \: CN=Test\nissued  on        \: 2013-07-10 15\:02\:37\nexpires on        \: 2023-07-08 15\:02\:37\nsigned using      \: RSA with SHA1\nEC key size       \: 192 bits\n":0
 
-X509 Certificate ASN1 (invalid version 3)
-x509parse_crt:"30173015a0030201038204deadbeef30080604cafed00d0500":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
-
-X509 Certificate ASN1 (invalid version overflow)
-x509parse_crt:"301a3018a00602047fffffff8204deadbeef30080604cafed00d0500":"":MBEDTLS_ERR_X509_UNKNOWN_VERSION
-
 X509 Certificate ASN1 (invalid SubjectAltNames tag)
 depends_on:MBEDTLS_RSA_C:MBEDTLS_SHA1_C
 x509parse_crt:"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":"":MBEDTLS_ERR_X509_INVALID_EXTENSIONS + MBEDTLS_ERR_ASN1_UNEXPECTED_TAG