CVE-2024-35838 wifi: mac80211: fix potential sta-link leak

Medium 5.5 Published Updated

A memory leak in the Linux kernel Wi-Fi subsystem allows attackers to cause a denial of service by triggering station link allocation failures.

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-2024-35838?

CVE-2024-35838 is a medium-severity denial of service vulnerability in Linux kernel, published on 17 May 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:

wifi: mac80211: fix potential sta-link leak

When a station is allocated, links are added but not set to valid yet (e.g. during connection to an AP MLD), we might remove the station without ever marking links valid, and leak them. Fix that.

Weakness: CWE-401

Which versions are affected by CVE-2024-35838?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-35838?

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-2024-35838 being exploited?

There is no known exploitation of CVE-2024-35838 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-35838, DEBIAN-CVE-2024-35838, GHSA-v8fm-4cx6-7vh8, UBUNTU-CVE-2024-35838.

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