CVE-2024-56632 nvme-tcp: fix the memleak while create new ctrl failed

What is CVE-2024-56632?

CVE-2024-56632 is a high-severity denial of service vulnerability in Linux kernel, published on 27 Dec 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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

nvme-tcp: fix the memleak while create new ctrl failed

Now while we create new ctrl failed, we have not free the tagset occupied by admin_q, here try to fix it.

Weakness: CWE-401

Which versions are affected by CVE-2024-56632?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-56632?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-56632 being exploited?

There is no known exploitation of CVE-2024-56632 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-2024-56632, DEBIAN-CVE-2024-56632, GHSA-7fw8-m89x-2xhm, UBUNTU-CVE-2024-56632.