Bug 1116347
| Summary: | CVE-2014-3631 BUG: unable to handle kernel NULL pointer dereference at 0000000000000018 [fedora-all] | ||||||
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| Product: | [Fedora] Fedora | Reporter: | Lorenzo Sartoratti <lorenzo.sartoratti> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | urgent | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 20 | CC: | awilliam, dhowells, gansalmon, itamar, jonathan, jwboyer, kernel-maint, madhu.chinakonda, mchehab, mruckman, pmatouse, valerio | ||||
| Target Milestone: | --- | Keywords: | Security, SecurityTracking | ||||
| Target Release: | --- | ||||||
| Hardware: | x86_64 | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | AcceptedFreezeException | ||||||
| Fixed In Version: | kernel-3.14.19-100.fc19 | Doc Type: | Release Note | ||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2014-09-19 10:09:53 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: | 1043122, 1140325 | ||||||
| Attachments: |
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Description
Lorenzo Sartoratti
2014-07-04 09:34:56 UTC
Hi the problem is still there. Now we are using the latest Fedora 20 kernel, 3.15.10-200 The system hang after 3 days and a few hours. Thank you for your support! Lorenzo IP: [<ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540 I think this is line 1550: ptr = node->slots[slot]; RAX is node and R15 is slot. Created attachment 935884 [details]
Fix for keyrings garbage collector
I managed to reproduce the problem in a userspace test harness. The problem is that gc doesn't correctly handle the root node being a shortcut. This patch should fix it.
Thanks David. I'll get this rolled into the Fedora kernels today. I'm assuming you're going to send this upstream with stable CC'd? Fixed in Fedora git. Proposed as a Freeze Exception for 21-alpha by Fedora user jwboyer using the blocker tracking app because: This is a security issue where a local unprivileged user could crash the system. kernel-3.16.2-301.fc21 has been submitted as an update for Fedora 21. https://admin.fedoraproject.org/updates/kernel-3.16.2-301.fc21 Package kernel-3.16.2-301.fc21: * should fix your issue, * was pushed to the Fedora 21 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.16.2-301.fc21' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2014-10693/kernel-3.16.2-301.fc21 then log in and leave karma (feedback). +1 FE +1 FE -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers Hi are you going to build a F20 kernel? Lorenzo The patch has been applied upstream: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=95389b08d93d5c06ec63ab49bd732b0069b7c35e (In reply to Lorenzo Sartoratti from comment #11) > Hi > are you going to build a F20 kernel? > > Lorenzo Yes. +1 FE, that gives it enough votes for accepted status. Sorry we missed reviewing this prior to RC1 :( kernel-3.16.2-201.fc20 has been submitted as an update for Fedora 20. https://admin.fedoraproject.org/updates/kernel-3.16.2-201.fc20 kernel-3.14.19-100.fc19 has been submitted as an update for Fedora 19. https://admin.fedoraproject.org/updates/kernel-3.14.19-100.fc19 kernel-3.16.2-201.fc20 has been pushed to the Fedora 20 stable repository. If problems still persist, please make note of it in this bug report. kernel-3.16.2-301.fc21 has been pushed to the Fedora 21 stable repository. If problems still persist, please make note of it in this bug report. Hi, after 6 days with the patched kernel both f20 virtual machines are still up and running. Thank you for your work! Great job! Lorenzo kernel-3.14.19-100.fc19 has been pushed to the Fedora 19 stable repository. If problems still persist, please make note of it in this bug report. |