CVE-2017-9077 Denial of service in n/a

High 7.8 Published Updated

Local attackers can cause a denial of service in the Linux kernel via crafted system calls due to mishandled inheritance in TCP IPv6 socket creation.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Local or same network only
Victim action needed
Not needed
Fix
Available

What is CVE-2017-9077?

CVE-2017-9077 is a high-severity denial of service vulnerability in Linux kernel, published on 19 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The tcp_v6_syn_recv_sock function in net/ipv6/tcp_ipv6.c in the Linux kernel through 4.11.1 mishandles inheritance, which allows local users to cause a denial of service or possibly have unspecified other impact via crafted system calls, a related issue to CVE-2017-8890.

Which versions are affected by CVE-2017-9077?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-9077?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2017-9077 being exploited?

There is no known exploitation of CVE-2017-9077 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-9077, GHSA-84wh-r6wp-qq8v, UBUNTU-CVE-2017-9077.

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