CVE-2014-9090 Denial of service in n/a

Medium 4.9 Published Updated

Local attackers can cause a system panic via a modify_ldt system call due to improper handling of Stack Segment faults in the Linux kernel.

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-2014-9090?

CVE-2014-9090 is a medium-severity denial of service vulnerability in Linux kernel, published on 30 Nov 2014. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

The do_double_fault function in arch/x86/kernel/traps.c in the Linux kernel through 3.17.4 does not properly handle faults associated with the Stack Segment (SS) segment register, which allows local users to cause a denial of service (panic) via a modify_ldt system call, as demonstrated by sigreturn_32 in the linux-clock-tests test suite.

Weakness: CWE-17

Which versions are affected by CVE-2014-9090?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2014-9090?

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-2014-9090 being exploited?

There is no known exploitation of CVE-2014-9090 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as DEBIAN-CVE-2014-9090, GHSA-w7mf-cp8w-3rfq, UBUNTU-CVE-2014-9090.

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