In theory, any Let's Encrypt certificate should cause this crash.

The serialised certificate transparency of the certificate at redwax.eu
is 1577 bytes, three times higher than the 512 byte limit that triggers
the crash.

            CT Precertificate SCTs: 
                Signed Certificate Timestamp:
                    Version   : v1(0)
                    Log ID    : 5C:DC:43:92:FE:E6:AB:45:44:B1:5E:9A:D4:56:E6:10:
                                37:FB:D5:FA:47:DC:A1:73:94:B2:5E:E6:F6:C7:0E:CA
                    Timestamp : Jan 11 03:13:53.345 2021 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:46:02:21:00:E3:F3:7C:A3:71:D1:57:DD:76:1E:01:
                                AA:61:7D:E2:39:6B:0F:2B:93:B3:3A:B2:90:8F:EE:D5:
                                04:92:12:BD:8B:02:21:00:D0:8C:15:42:F5:E7:6C:D0:
                                FC:B4:25:E2:57:5E:C1:EB:F8:7A:4A:06:5B:AD:4C:6E:
                                B0:25:96:45:DF:A9:97:41
                Signed Certificate Timestamp:
                    Version   : v1(0)
                    Log ID    : F6:5C:94:2F:D1:77:30:22:14:54:18:08:30:94:56:8E:
                                E3:4D:13:19:33:BF:DF:0C:2F:20:0B:CC:4E:F1:64:E3
                    Timestamp : Jan 11 03:13:53.322 2021 GMT
                    Extensions: none
                    Signature : ecdsa-with-SHA256
                                30:44:02:20:3E:CC:F8:39:7E:27:5F:20:D7:77:DC:75:
                                9D:D2:F2:C8:09:F4:86:1C:26:FF:76:DF:21:A0:BD:90:
                                8A:26:FA:59:02:20:75:69:90:93:B2:F4:76:BC:1A:D3:
                                63:B7:1C:D0:72:56:13:97:7D:37:B3:8B:E2:6E:8C:71:
                                1A:72:4D:7E:86:F4

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https://bugs.launchpad.net/bugs/1912389

Title:
   [Patch] SIGSEGV: crash when certificate contains extension longer
  than 512 bytes

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