Bug 1316972
| Summary: | glibc: NULL pointer dereference in stub resolver with unconnectable name server addresses | |||
|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Florian Weimer <fweimer> | |
| Component: | glibc | Assignee: | Florian Weimer <fweimer> | |
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | |
| Severity: | unspecified | Docs Contact: | ||
| Priority: | unspecified | |||
| Version: | 24 | CC: | arjun.is, codonell, dj, fweimer, jakub, jfrieben, law, mfabian, pfrankli, redhat-bugzilla, siddhesh | |
| Target Milestone: | --- | |||
| Target Release: | --- | |||
| Hardware: | Unspecified | |||
| OS: | Unspecified | |||
| Whiteboard: | ||||
| Fixed In Version: | glibc-2.22-15.fc23, glibc-2.23.1-7.fc24 | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | ||
| Clone Of: | ||||
| : | 1320596 1320599 (view as bug list) | Environment: | ||
| Last Closed: | 2016-05-15 04:53:53 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: | 1320596, 1320599, 1323839 | |||
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Description
Florian Weimer
2016-03-11 15:16:32 UTC
swbz#19825 is a very similar bug in send_vc/TCP (the original bug is about send_dg/UDP), so far only observed under valgrind. swbz#19831 and swbz#19830 should be backported as well, to get cleaner test suite runs. *** Bug 1331711 has been marked as a duplicate of this bug. *** glibc-2.22-15.fc23 has been submitted as an update to Fedora 23. https://bodhi.fedoraproject.org/updates/FEDORA-2016-68abc0be35 glibc-2.22-15.fc23 has been pushed to the Fedora 23 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-68abc0be35 Pre-existing 2.23 backport:
commit 3a188eb4e641d2df0cfd352fd09232347f28fbe1
Author: Florian Weimer <fweimer>
Date: Fri Mar 25 11:49:51 2016 +0100
resolv: Always set *resplen2 out parameter in send_dg [BZ #19791]
New backport:
commit 075b2665b159491fdd17f5aee90d47fa7388ed6f
Author: Florian Weimer <fweimer>
Date: Wed Apr 27 14:26:47 2016 +0200
resolv: Always set *resplen2 out parameter in send_vc [BZ #19825]
In various error scenarios (for example, if the server closes the
TCP connection before sending the full response), send_vc can return
without resetting the *resplen2 value. This can pass uninitialized
or unexpected data to the caller.
(cherry picked from commit b9bdfa7c8fa22c944bb5f21a673dfd1f91b71c56)
glibc-2.23.1-6.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74 glibc-2.22-15.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report. glibc-2.23.1-6.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74 glibc-2.23.1-7.fc24 has been submitted as an update to Fedora 24. https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74 glibc-2.23.1-7.fc24 has been pushed to the Fedora 24 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2016-b321728d74 glibc-2.23.1-7.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report. |