Thank you for working with OpenSSL upstream, explaining the issue at hand, for everyone to eventually understand what is going on, and finally coming up with a solution on the OpenSSL side of the APIs that is accepted by upstream into development v3 branch and stable 1.1.1 branch.
I have started paperwork to pick up these changes at https://bugs.launchpad.net/ubuntu/+source/openssl/+bug/1951943 As far as I can tell it would be desirable to ship in 5 current Ubuntu stable series, hence using a new bug to track landing those updates. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to wget in Ubuntu. https://bugs.launchpad.net/bugs/1921518 Title: OpenSSL "double free" error Status in wget package in Ubuntu: Fix Released Status in wget source package in Focal: Fix Committed Bug description: [Impact] openssl config file is being loaded twice, causing engines to be loaded twice if specified therein, causing double free errors and other strange behavior. [Test plan] Run the command of the package being tested in gdb -ex "break CONF_modules_load_file" -ex "run" --args and make sure it only breaks one. Regression test: In default Ubuntu configuration, either no openssl configuration is provided, or it contains no settings that affect wget. This code path changes how/when openssl configuration is loaded and used by openssl. One should verify that: 1) wget continues to work without openssl.cnf 2) wget continues to work with stock ubuntu unmodified openssl.cnf 3) wget continue to honor and use custom TLS settings that one may have specified in openssl.cnf (for example custom engine) [Where problems could occur] wget: This is an upstream change that changes initialization and is in use in later releases. Since it mostly removes an unneeded call to the load file function, a regression could be a config file being ignored, but it seems unlikely given the use in later releases [Original bug report] "double free" error is seen when using curl utility. Error is from libcrypto.so which is part of the OpenSSL package. This happens only when OpenSSL is configured to use a dynamic engine. OpenSSL version is 1.1.1f The issue is not encountered if http://www.openssl.org/source/openssl-1.1.1f.tar.gz is used instead. OpenSSL can be configured to use a dynamic engine by editing the default openssl config file which is located at '/etc/ssl/openssl.cnf' on Ubuntu systems. On Bluefield systems, config diff to enable PKA dynamic engine, is as below: +openssl_conf = conf_section + # Extra OBJECT IDENTIFIER info: #oid_file = $ENV::HOME/.oid oid_section = new_oids +[ conf_section ] +engines = engine_section + +[ engine_section ] +bf = bf_section + +[ bf_section ] +engine_id=pka +dynamic_path=/usr/lib/aarch64-linux-gnu/engines-1.1/pka.so +init=0 + engine_id above refers to dynamic engine name/identifier. dynamic_path points to the .so file for the dynamic engine. # curl -O https://tpo.pe/pathogen.vim double free or corruption (out) Aborted (core dumped) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/wget/+bug/1921518/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
