Bug 859346
| Summary: | use-after-free in destroy_conntrack | ||||||
|---|---|---|---|---|---|---|---|
| Product: | [Fedora] Fedora | Reporter: | Stef Walter <stefw> | ||||
| Component: | kernel | Assignee: | Kernel Maintainer List <kernel-maint> | ||||
| Status: | CLOSED ERRATA | QA Contact: | Fedora Extras Quality Assurance <extras-qa> | ||||
| Severity: | unspecified | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 18 | CC: | gansalmon, itamar, jonathan, kernel-maint, madhu.chinakonda, mattgates5 | ||||
| Target Milestone: | --- | ||||||
| Target Release: | --- | ||||||
| Hardware: | Unspecified | ||||||
| OS: | Unspecified | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2013-03-11 01:22:45 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: | |||||||
| Attachments: |
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posted upstream to netdev, with you cc'd. Stef, are you still seeing this with the 3.6 final release, or the 3.7-rc5 kernels in rawhide? It appears that Dave's upstream report to netdev got 0 replies. *** Bug 917792 has been marked as a duplicate of this bug. *** Eric Dumazet just posted this patch which should fix it.
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index 2c6a22e..b7c457a 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -747,6 +747,8 @@ static netdev_tx_t tun_net_xmit(struct sk_buff *skb, struct net_device *dev)
goto drop;
skb_orphan(skb);
+ nf_reset(skb);
+
/* Enqueue packet */
skb_queue_tail(&tfile->socket.sk->sk_receive_queue, skb);
This was (In reply to comment #2) > Stef, are you still seeing this with the 3.6 final release, or the 3.7-rc5 > kernels in rawhide? This was not reproducible for me. At least it seemed hard to reproduce. kernel-3.8.2-206.fc18 has been submitted as an update for Fedora 18. https://admin.fedoraproject.org/updates/kernel-3.8.2-206.fc18 kernel-3.8.2-105.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/kernel-3.8.2-105.fc17 Package kernel-3.8.2-206.fc18: * should fix your issue, * was pushed to the Fedora 18 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing kernel-3.8.2-206.fc18' as soon as you are able to, then reboot. Please go to the following url: https://admin.fedoraproject.org/updates/FEDORA-2013-3630/kernel-3.8.2-206.fc18 then log in and leave karma (feedback). kernel-3.8.2-206.fc18 has been pushed to the Fedora 18 stable repository. If problems still persist, please make note of it in this bug report. kernel-3.8.2-105.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/FEDORA-2013-3638/kernel-3.8.2-105.fc17 kernel-3.8.3-101.fc17 has been submitted as an update for Fedora 17. https://admin.fedoraproject.org/updates/kernel-3.8.3-101.fc17 kernel-3.8.3-103.fc17 has been pushed to the Fedora 17 stable repository. If problems still persist, please make note of it in this bug report. |
Created attachment 615311 [details] Picture of the kernel panic Description of problem: Today rawhide did not start up to a GDM login screen. I tried to restart the system, using a 'shutdown -r now' from a text VT. I got the attached kernel panic. Version-Release number of selected component (if applicable): Installed Packages Name : kernel Arch : x86_64 Version : 3.6.0 Release : 0.rc6.git0.2.fc18 How reproducible: Not sure.