CVE-2024-36935 ice: ensure the copied buf is NUL terminated

High 7.1 Published Updated

A local attacker can trigger an out-of-bounds read in the ice network driver via improper string termination, potentially leaking kernel memory.

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-2024-36935?

CVE-2024-36935 is a high-severity vulnerability in Linux kernel, published on 30 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:

ice: ensure the copied buf is NUL terminated

Currently, we allocate a count-sized kernel buffer and copy count bytes from userspace to that buffer. Later, we use sscanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using sscanf. Fix this issue by using memdup_user_nul instead of memdup_user.

Weakness: CWE-125

Which versions are affected by CVE-2024-36935?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-36935?

Apply the vendor's patch.

Is CVE-2024-36935 being exploited?

There is no known exploitation of CVE-2024-36935 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as BELL-CVE-2024-36935, DEBIAN-CVE-2024-36935, UBUNTU-CVE-2024-36935.

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