CVE-2024-50065 ntfs3: Change to non-blocking allocation in ntfs_d_hash

Medium 5.5 Published Updated

A sleeping allocation in the Linux kernel ntfs3 driver during RCU-walk can cause a system hang or crash under memory pressure.

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-2024-50065?

CVE-2024-50065 is a medium-severity denial of service vulnerability in Linux kernel, published on 21 Oct 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

In the Linux kernel, the following vulnerability has been resolved:

ntfs3: Change to non-blocking allocation in ntfs_d_hash

d_hash is done while under "rcu-walk" and should not sleep. __get_name() allocates using GFP_KERNEL, having the possibility to sleep when under memory pressure. Change the allocation to GFP_NOWAIT.

Which versions are affected by CVE-2024-50065?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-50065?

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-2024-50065 being exploited?

There is no known exploitation of CVE-2024-50065 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-50065, DEBIAN-CVE-2024-50065, GHSA-7683-mrww-rjhc, UBUNTU-CVE-2024-50065.

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