Bug 745966
| Summary: | sssd_pam segfaults on sssd restart | |||
|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Kaushik Banerjee <kbanerje> | |
| Component: | sssd | Assignee: | Stephen Gallagher <sgallagh> | |
| Status: | CLOSED ERRATA | QA Contact: | IDM QE LIST <seceng-idm-qe-list> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | high | |||
| Version: | 6.2 | CC: | grajaiya, jgalipea, jzeleny, prc, syeghiay | |
| Target Milestone: | rc | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | sssd-1.5.1-57.el6 | Doc Type: | Bug Fix | |
| Doc Text: |
Cause: When internal communication between PAM responder and one of SSSD's backends timed out for some reason, a handling routine is invoked. That routine can cause a race condition which can result in accessing memory that has been freed.
Consequence: PAM responder crashes
Fix: Timeout handling routine doesn't free the context until all operations on this context are done.
Result: In case the communication times out, PAM responder doesn't crash any more.
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Story Points: | --- | |
| Clone Of: | ||||
| : | 748896 (view as bug list) | Environment: | ||
| Last Closed: | 2011-12-06 16:41:03 UTC | Type: | --- | |
| 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: | 748554, 748896 | |||
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Description
Kaushik Banerjee
2011-10-13 14:25:12 UTC
Upstream ticket: https://fedorahosted.org/sssd/ticket/1038 Verified that segfaults from sssd_pam are no longer seen after restarting sssd. Verified in version: # rpm -qi sssd | head Name : sssd Relocations: (not relocatable) Version : 1.5.1 Vendor: Red Hat, Inc. Release : 59.el6 Build Date: Tue 18 Oct 2011 02:29:48 AM IST Install Date: Tue 18 Oct 2011 11:30:40 AM IST Build Host: x86-003.build.bos.redhat.com Group : Applications/System Source RPM: sssd-1.5.1-59.el6.src.rpm Size : 3615305 License: GPLv3+ Signature : (none) Packager : Red Hat, Inc. <http://bugzilla.redhat.com/bugzilla> URL : http://fedorahosted.org/sssd/ Summary : System Security Services Daemon
Technical note added. If any revisions are required, please edit the "Technical Notes" field
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New Contents:
Cause: When internal communication between PAM responder and one of SSSD's backends timed out for some reason, a handling routine is invoked. That routine can cause a race condition which can result in accessing memory that has been freed.
Consequence: PAM responder crashes
Fix: Timeout handling routine doesn't free the context until all operations on this context are done.
Result: In case the communication times out, PAM responder doesn't crash any more.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. http://rhn.redhat.com/errata/RHBA-2011-1529.html |