CVE-2024-36481 tracing/probes: fix error check in parse_btf_field()

Medium 5.5 Published Updated

A missing error check in the Linux kernel tracing subsystem can lead to a null pointer dereference, causing a system crash.

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-2024-36481?

CVE-2024-36481 is a medium-severity vulnerability in Linux kernel, published on 21 Jun 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:

tracing/probes: fix error check in parse_btf_field()

btf_find_struct_member() might return NULL or an error via the ERR_PTR() macro. However, its caller in parse_btf_field() only checks for the NULL condition. Fix this by using IS_ERR() and returning the error up the stack.

Weakness: CWE-754

Which versions are affected by CVE-2024-36481?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-36481?

Apply the vendor's patch.

Is CVE-2024-36481 being exploited?

There is no known exploitation of CVE-2024-36481 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-42834, AZL-42854, BELL-CVE-2024-36481, DEBIAN-CVE-2024-36481, GHSA-c2wq-m25g-5c8w, UBUNTU-CVE-2024-36481.

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