CVE-2024-42080 RDMA/restrack: Fix potential invalid address access

What is CVE-2024-42080?

CVE-2024-42080 is a medium-severity use after free vulnerability in Linux kernel, published on 29 Jul 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:

RDMA/restrack: Fix potential invalid address access

struct rdma_restrack_entry's kern_name was set to KBUILD_MODNAME in ib_create_cq(), while if the module exited but forgot del this rdma_restrack_entry, it would cause a invalid address access in rdma_restrack_clean() when print the owner of this rdma_restrack_entry.

These code is used to help find one forgotten PD release in one of the ULPs. But it is not needed anymore, so delete them.

Weakness: CWE-787

Which versions are affected by CVE-2024-42080?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-42080?

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-2024-42080 being exploited?

There is no known exploitation of CVE-2024-42080 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-47160, BELL-CVE-2024-42080, DEBIAN-CVE-2024-42080, GHSA-vmmw-2v5h-4hf6, ROOT-OS-DEBIAN-11-CVE-2024-42080, UBUNTU-CVE-2024-42080.