does it work, though.  I think I just found it and installed/upgraded one of my systems and it's still aborting/crashing:

Jun 10 13:41:28 rpcbind[9933]: free(): invalid pointer
Jun 10 13:41:28 systemd[1]: rpcbind.service: Main process exited, code=dumped, status=6/ABRT
Jun 10 13:41:28 systemd[1]: rpcbind.service: Failed with result 'core-dump'.
Jun 10 13:41:28 systemd[1]: rpcbind.service: Service hold-off time over, scheduling restart.
Jun 10 13:41:28 systemd[1]: rpcbind.service: Scheduled restart job, restart counter is at 9.
# apt policy rpcbind
rpcbind:
  Installed: 0.2.3-0.6ubuntu0.18.04.3
  Candidate: 0.2.3-0.6ubuntu0.18.04.3
  Version table:
 *** 0.2.3-0.6ubuntu0.18.04.3 500
        500 http://us.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
        100 /var/lib/dpkg/status
     0.2.3-0.6 500
        500 http://us.archive.ubuntu.com/ubuntu bionic/main amd64 Packages

________________________________
From: <email address hidden> <email address hidden> on behalf of Nate Collins <email address hidden>
Sent: Thursday, June 10, 2021 1:29 PM
To: Kleinhesselink, Dirk <email address hidden>
Subject: [Bug 1931507] Re: rpcbind failing on 0.2.3-0.6ubuntu0.18.04.2

I was able to pull the new version just now.

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https://urldefense.com/v3/__https://bugs.launchpad.net/bugs/1931507__;!!LQC6Cpwp!7admk8Py1J1naChWxy8CYTPkbtJq38T_3H3yyEhs0jgqmaE5ZtdJxCMgEg8oeO1MWFFuc1SX$

Title:
  rpcbind failing on 0.2.3-0.6ubuntu0.18.04.2

Status in rpcbind package in Ubuntu:
  Fix Released

Bug description:
  Failure with new rpcbind version. Reverting to the previous version
  fixes it.

  Bad: rpcbind_0.2.3-0.6ubuntu0.18.04.2_amd64.deb
  Good: rpcbind_0.2.3-0.6ubuntu0.18.04.1_amd64.deb


  $ journalctl -u rpcbind.service
  Jun 09 23:41:00 MYSYSTEM systemd[1]: Started RPC bind portmap service.
  Jun 09 23:41:30 MYSYSTEM rpcbind[25504]: rpcbind: pmap_prot.c:50: xdr_pmap: Assertion `regs != NULL' failed.
  Jun 09 23:41:30 MYSYSTEM systemd[1]: rpcbind.service: Main process exited, code=killed, status=6/ABRT
  Jun 09 23:41:30 MYSYSTEM systemd[1]: rpcbind.service: Failed with result 'signal'.
  Jun 09 23:41:30 MYSYSTEM systemd[1]: rpcbind.service: Service hold-off time over, scheduling restart.
  Jun 09 23:41:30 MYSYSTEM systemd[1]: rpcbind.service: Scheduled restart job, restart counter is at 477.
  Jun 09 23:41:30 MYSYSTEM systemd[1]: Stopped RPC bind portmap service.


  $ lsb_release -rd
  Description:    Ubuntu 18.04.5 LTS
  Release:        18.04

  $ uname -a
  Linux MYSYSTEM 5.4.0-1044-gcp #47~18.04.2-Ubuntu SMP Mon May 17 03:48:15 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux

  $ apt-cache policy rpcbind
  rpcbind:
    Installed: 0.2.3-0.6ubuntu0.18.04.1
    Candidate: 0.2.3-0.6ubuntu0.18.04.2
    Version table:
       0.2.3-0.6ubuntu0.18.04.2 500
          500 https://urldefense.com/v3/__http://us-east1.gce.archive.ubuntu.com/ubuntu__;!!LQC6Cpwp!7admk8Py1J1naChWxy8CYTPkbtJq38T_3H3yyEhs0jgqmaE5ZtdJxCMgEg8oeO1MWKNVOvR7$  bionic-updates/main amd64 Packages
          500 https://urldefense.com/v3/__http://security.ubuntu.com/ubuntu__;!!LQC6Cpwp!7admk8Py1J1naChWxy8CYTPkbtJq38T_3H3yyEhs0jgqmaE5ZtdJxCMgEg8oeO1MWH7bgmEN$  bionic-security/main amd64 Packages
   *** 0.2.3-0.6ubuntu0.18.04.1 100
          100 /var/lib/dpkg/status
       0.2.3-0.6 500
          500 https://urldefense.com/v3/__http://us-east1.gce.archive.ubuntu.com/ubuntu__;!!LQC6Cpwp!7admk8Py1J1naChWxy8CYTPkbtJq38T_3H3yyEhs0jgqmaE5ZtdJxCMgEg8oeO1MWKNVOvR7$  bionic/main amd64 Packages

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