CVE-2016-9806 Race condition in n/a

What is CVE-2016-9806?

CVE-2016-9806 is a high-severity vulnerability in Linux kernel, published on 28 Dec 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official 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.

Weakness: CWE-415, CWE-362

Which versions are affected by CVE-2016-9806?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2016-9806?

Apply the vendor's patch.

Is CVE-2016-9806 being exploited?

There is no known exploitation of CVE-2016-9806 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2016-9806, GHSA-3fhq-qffp-rp75, SUSE-SU-2017:0303-1, UBUNTU-CVE-2016-9806.