Bug 1236107
| Summary: | p11-kit: pthread_atfork() isn't safe to use with dlopen() | ||
|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Nikos Mavrogiannopoulos <nmavrogi> |
| Component: | p11-kit | Assignee: | Daiki Ueno <dueno> |
| Status: | CLOSED CURRENTRELEASE | QA Contact: | Fedora Extras Quality Assurance <extras-qa> |
| Severity: | unspecified | Docs Contact: | |
| Priority: | unspecified | ||
| Version: | rawhide | CC: | kengert, mpreisle, stefw, tmraz |
| Target Milestone: | --- | Keywords: | Reopened |
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2017-11-23 10:20:52 UTC | Type: | Bug |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 1173546 | ||
Fedora 22 changed to end-of-life (EOL) status on 2016-07-19. Fedora 22 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed. This bug appears to have been reported against 'rawhide' during the Fedora 25 development cycle. Changing version to '25'. This bug appears to have been reported against 'rawhide' during the Fedora 26 development cycle. Changing version to '26'. This package has changed ownership in the Fedora Package Database. Reassigning to the new owner of this component. According to https://bugzilla.redhat.com/show_bug.cgi?id=985492 , this seems to be already addressed. |
Description of problem: p11-kit relies on pthread_atfork() to detect the current forkid. However, that function is broken and there are systems where an application will crash when that interface is used over dlopen(). Scenario (copied from [0]): application A loads libp11 libp11 uses pthread_atfork() to register a handler application A uses PKCS#11 with no problem application A unloads libp11 application A calls fork() handler is called but the code is no more present in memory => crash There is an open bug about this posix function: http://austingroupbugs.net/view.php?id=851 An alternative: https://refspecs.linuxfoundation.org/LSB_2.0.0/LSB-Core/LSB-Core/baselib--register-atfork.html [0]. https://github.com/OpenSC/libp11/pull/21