What is CVE-2022-41222?

CVE-2022-41222 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.0/10. Published 2022-09-21.

How severe is CVE-2022-41222?

High severity. CVSS v3 base score is 7.0 out of 10.

Is CVE-2022-41222 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Use After Free in Linux Kernel

CVE-2022-41222

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.

Vulnerability class: Use-After-Free

Published 2022-09-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.0 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.7th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000

Affected products

Linux Kernel
NetApp Hci Baseboard Management Controller — versions h300s, h410c, h410s
Canonical Ubuntu Linux — versions 18.04, 20.04, 22.04
Debian Linux — versions 10.0

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.13.3 (Release Notes, Vendor Advisory)
bugs.chromium.org/p/project-zero/issues/detail (Exploit, Patch, Mailing List, Third Party Advisory, Issue Tracking)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/ (Patch, Vendor Advisory)
packetstormsecurity.com/files/168466/Linux-Stable-5.4-5.10-Use-After-Free-Race-… (VDB Entry, Third Party Advisory)
lists.debian.org/debian-lts-announce/2022/11/msg00001.html (mailing-list, Mailing List, Third Party Advisory)
security.netapp.com/advisory/ntap-20230214-0008/ (Third Party Advisory)
packetstormsecurity.com/files/171005/Kernel-Live-Patch-Security-Notice-LNS-0091… (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2022-41222?: CVE-2022-41222 is a high-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 7.0/10. Published 2022-09-21.
How severe is CVE-2022-41222?: High severity. CVSS v3 base score is 7.0 out of 10.
Is CVE-2022-41222 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.