CVE-2015-1573 Denial of service in n/a

Medium 5.5 Published Updated

Local users with CAP_NET_ADMIN can cause a kernel panic via netfilter table flushes, requiring a kernel patch.

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-2015-1573?

CVE-2015-1573 is a medium-severity denial of service vulnerability in Linux kernel, published on 2 May 2016. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The nft_flush_table function in net/netfilter/nf_tables_api.c in the Linux kernel before 3.18.5 mishandles the interaction between cross-chain jumps and ruleset flushes, which allows local users to cause a denial of service (panic) by leveraging the CAP_NET_ADMIN capability.

Weakness: CWE-19

Which versions are affected by CVE-2015-1573?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2015-1573?

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-2015-1573 being exploited?

There is no known exploitation of CVE-2015-1573 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as GHSA-395m-2555-53cr.

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