CVE-2024-47710 sock_map: Add a cond_resched() in sock_hash_free()

Medium 5.5 Published Updated

An attacker can cause a system soft lockup and denial of service by destroying a sock_map with many buckets, requiring a kernel patch.

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-2024-47710?

CVE-2024-47710 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:

sock_map: Add a cond_resched() in sock_hash_free()

Several syzbot soft lockup reports all have in common sock_hash_free()

If a map with a large number of buckets is destroyed, we need to yield the cpu when needed.

Which versions are affected by CVE-2024-47710?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-47710?

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-2024-47710 being exploited?

There is no known exploitation of CVE-2024-47710 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-51114, AZL-51213, BELL-CVE-2024-47710, DEBIAN-CVE-2024-47710, GHSA-36gf-6c47-6cr7, UBUNTU-CVE-2024-47710.

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