CVE-2024-56600 net: inet6: do not leave a dangling sk pointer in inet6_create()

What is CVE-2024-56600?

CVE-2024-56600 is a high-severity use after free vulnerability in Linux kernel, published on 27 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:

net: inet6: do not leave a dangling sk pointer in inet6_create()

sock_init_data() attaches the allocated sk pointer to the provided sock object. If inet6_create() fails later, the sk object is released, but the sock object retains the dangling sk pointer, which may cause use-after-free later.

Clear the sock sk pointer on error.

Weakness: CWE-416

Which versions are affected by CVE-2024-56600?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56600?

Apply the vendor's patch.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2024-56600 being exploited?

There is no known exploitation of CVE-2024-56600 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 AZL-55491, AZL-55576, BELL-CVE-2024-56600, DEBIAN-CVE-2024-56600, GHSA-qc69-73cr-g9fg, SUSE-SU-2025:1214-1 and 3 more.