CVE-2017-15274 Null dereference in n/a

Medium 5.5 Published Updated

Local attackers can cause a denial of service via a NULL pointer dereference in the Linux kernel key management subsystem using crafted system calls.

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-2017-15274?

CVE-2017-15274 is a medium-severity vulnerability in Linux kernel, published on 12 Oct 2017. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

security/keys/keyctl.c in the Linux kernel before 4.11.5 does not consider the case of a NULL payload in conjunction with a nonzero length value, which allows local users to cause a denial of service (NULL pointer dereference and OOPS) via a crafted add_key or keyctl system call, a different vulnerability than CVE-2017-12192.

Weakness: CWE-476

Which versions are affected by CVE-2017-15274?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2017-15274?

Apply the vendor's patch.

Is CVE-2017-15274 being exploited?

There is no known exploitation of CVE-2017-15274 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2017-15274, GHSA-pmx4-mgj6-5fc6, UBUNTU-CVE-2017-15274.

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