CVE-2017-15128 Denial of service in Linux kernel before 4.13.12

Medium 5.5 Published Updated

A lack of size check in the Linux kernel hugetlb subsystem allows attackers to cause a denial of service via a BUG condition.

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-2017-15128?

CVE-2017-15128 is a medium-severity denial of service vulnerability in Linux kernel, published on 14 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A flaw was found in the hugetlb_mcopy_atomic_pte function in mm/hugetlb.c in the Linux kernel before 4.13.12. A lack of size check could cause a denial of service (BUG).

Weakness: CWE-119

Which versions are affected by CVE-2017-15128?

It affects 3 products.

Products include Linux kernel, Redhat Enterprise Linux, Redhat Enterprise Mrg.

How do I fix CVE-2017-15128?

Upgrade to a fixed version.

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-2017-15128 being exploited?

There is no known exploitation of CVE-2017-15128 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-15128, GHSA-78vc-rw83-8p6r, UBUNTU-CVE-2017-15128.

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