CVE-2017-18255 Integer overflow in n/a

High 7.8 Published Updated

Local attackers can cause a denial of service via integer overflow in the Linux kernel's perf subsystem by providing large values.

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-2017-18255?

CVE-2017-18255 is a high-severity vulnerability in Linux kernel, published on 31 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The perf_cpu_time_max_percent_handler function in kernel/events/core.c in the Linux kernel before 4.11 allows local users to cause a denial of service (integer overflow) or possibly have unspecified other impact via a large value, as demonstrated by an incorrect sample-rate calculation.

Weakness: CWE-190

Which versions are affected by CVE-2017-18255?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-18255?

Upgrade to a fixed version.

Is CVE-2017-18255 being exploited?

There is no known exploitation of CVE-2017-18255 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-18255, GHSA-gjm4-57hm-j3hg, UBUNTU-CVE-2017-18255.

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