CVE-2024-50076 vt: prevent kernel-infoleak in con_font_get()

Medium 6.5 Published Updated

A local attacker can read uninitialized kernel memory via the con_font_get function, potentially exposing sensitive data.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2024-50076?

CVE-2024-50076 is a medium-severity vulnerability in Linux kernel, published on 29 Oct 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

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

vt: prevent kernel-infoleak in con_font_get()

font.data may not initialize all memory spaces depending on the implementation of vc->vc_sw->con_font_get. This may cause info-leak, so to prevent this, it is safest to modify it to initialize the allocated memory space to 0, and it generally does not affect the overall performance of the system.

Weakness: CWE-909

Which versions are affected by CVE-2024-50076?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-50076?

Apply the vendor's patch.

Is CVE-2024-50076 being exploited?

There is no known exploitation of CVE-2024-50076 in the wild and no public exploit code.

All Linux kernel vulnerabilities

Sources

Also known as AZL-52089, BELL-CVE-2024-50076, DEBIAN-CVE-2024-50076, GHSA-82vq-g77c-v2h9, ROOT-OS-DEBIAN-11-CVE-2024-50076, UBUNTU-CVE-2024-50076.

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