CVE-2022-2602 Use after free in linux

What is CVE-2022-2602?

CVE-2022-2602 is a medium-severity use after free vulnerability in Canonical Ubuntu Linux, published on 8 Jan 2024. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

io_uring UAF, Unix SCM garbage collection

Weakness: CWE-416

Which versions are affected by CVE-2022-2602?

It affects 2 products.

Products include Canonical Ubuntu Linux, Linux kernel.

How do I fix CVE-2022-2602?

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-2022-2602 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-2602 exists.

Public exploit code: 3 proofs of concept on GitHub.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

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

Also known as AZL-33262, DEBIAN-CVE-2022-2602, OESA-2022-2069, OESA-2022-2070, SUSE-SU-2023:0339-1, UBUNTU-CVE-2022-2602.