Dear Maintainer, hello Bruce Momjian, with the last informations the issue is perfectly reproducible.
It looks like a use after free caused by statically stored function pointers in libengine-pkcs11-openssl / libp11. That led to following upstream bug: https://github.com/OpenSC/libp11/issues/328 This got fixed in this commit: https://github.com/OpenSC/libp11/commit/e64496a198d4d2eb0310a22dc21be8b81367d319 This commit is not yet included in an upstream release tag. Therefore this error is also visible in current testing. I hope it is ok to reassign to libengine-pkcs11-openssl. Kind regards, Bernhard
