CVE-2016-9806
Description
Race condition in the netlink_dump function in net/netlink/af_netlink.c in the Linux kernel before 4.6.3 allows local users to cause a denial of service (double free) or possibly have unspecified other impact via a crafted application that makes sendmsg system calls, leading to a free operation associated with a new dump that started earlier than anticipated.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 4.6.3-1 |
| debian | bullseye | fixed | 4.6.3-1 |
| debian | forky | fixed | 4.6.3-1 |
| debian | sid | fixed | 4.6.3-1 |
| debian | trixie | fixed | 4.6.3-1 |
| linux-kernel | affected | 3.12.62 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=92964c79b357efd980812c4de5c1fd2ec8bb5520
- http://lists.openwall.net/netdev/2016/05/15/69
- http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3
- http://www.openwall.com/lists/oss-security/2016/12/03/4
- http://www.securityfocus.com/bid/94653
- http://www.securitytracker.com/id/1037968
- https://access.redhat.com/errata/RHSA-2017:1842
- https://access.redhat.com/errata/RHSA-2017:2077
- https://access.redhat.com/errata/RHSA-2017:2669
- https://bugzilla.redhat.com/show_bug.cgi?id=1401502
- https://github.com/torvalds/linux/commit/92964c79b357efd980812c4de5c1fd2ec8bb5520
- https://source.android.com/security/bulletin/2017-03-01.html
- https://www.suse.com/security/cve/CVE-2016-9806.html
- https://security-tracker.debian.org/tracker/CVE-2016-9806
CWEs
CWE-362 CWE-415
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.