CVE-2022-41222 Use after free in n/a

What is CVE-2022-41222?

CVE-2022-41222 is a high-severity use after free vulnerability in Canonical Ubuntu Linux, published on 21 Sep 2022. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

mm/mremap.c in the Linux kernel before 5.13.3 has a use-after-free via a stale TLB because an rmap lock is not held during a PUD move.

Weakness: CWE-416

Which versions are affected by CVE-2022-41222?

It affects 4 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Netapp Hci Baseboard Management Controller.

How do I fix CVE-2022-41222?

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-2022-41222 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-41222 exists.

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
• GitHub advisory
• How this page is made

Also known as A-248354871, ASB-A-248354871, DEBIAN-CVE-2022-41222, GHSA-jfpq-w2g4-wcpm, UBUNTU-CVE-2022-41222.