CVE-2016-9806
Published Dec 28, 2016 · Updated Oct 23, 2026
Original summary
Normalized public record · Updated Oct 23, 2026
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.
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
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.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
- SSVC priority
- MEDIUM
- Confidence
- 10%
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- 94653 ↗
- 1037968 ↗
- [oss-security] 20161203 CVE Request: -- Linux kernel: double free in netlink_dump ↗
- RHSA-2017:2669 ↗
- Patch commit ↗
- [netdev] 20160515 BUG: use-after-free in netlink_dump ↗
- Patch commit ↗
- RHSA-2017:2077 ↗
- RHSA-2017:1842 ↗
- source.android.com ↗
- www.kernel.org ↗
- bugzilla.redhat.com ↗
Record history
Published Dec 28, 2016 · Last refreshed Oct 23, 2026