CVE-2022-24122 Use after free in n/a

What is CVE-2022-24122?

CVE-2022-24122 is a high-severity use after free vulnerability in Fedoraproject Fedora, published on 29 Jan 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

kernel/ucount.c in the Linux kernel 5.14 through 5.16.4, when unprivileged user namespaces are enabled, allows a use-after-free and privilege escalation because a ucounts object can outlive its namespace.

Weakness: CWE-416

Which versions are affected by CVE-2022-24122?

It affects 10 products.

Products include Fedoraproject Fedora, Linux kernel, Netapp H300e Firmware, Netapp H300s Firmware, Netapp H410c Firmware, Netapp H410s Firmware and 4 more.

How do I fix CVE-2022-24122?

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-2022-24122 being exploited?

There is no known exploitation of CVE-2022-24122 in the wild and no public exploit code.

Public exploit code: 1 proofs of concept on GitHub.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

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

Also known as AZL-8451, DEBIAN-CVE-2022-24122, GHSA-qffg-f4f5-j77v, UBUNTU-CVE-2022-24122.