CVE-2024-56676 thermal: testing: Initialize some variables annoteded with _free()

What is CVE-2024-56676?

CVE-2024-56676 is a medium-severity vulnerability in Linux kernel, published on 28 Dec 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:

thermal: testing: Initialize some variables annoteded with _free()

Variables annotated with __free() need to be initialized if the function can return before they get updated for the first time or the attempt to free the memory pointed to by them upon function return may crash the kernel.

Fix this issue in some places in the thermal testing code.

Weakness: CWE-909

Which versions are affected by CVE-2024-56676?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56676?

Apply the vendor's patch.

Is CVE-2024-56676 being exploited?

There is no known exploitation of CVE-2024-56676 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2024-56676, GHSA-jqcp-w97c-4jjv, UBUNTU-CVE-2024-56676.