What is CVE-2022-41218?

CVE-2022-41218 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 5.5/10. Published 2022-09-21.

How severe is CVE-2022-41218?

Medium severity. CVSS v3 base score is 5.5 out of 10.

Is CVE-2022-41218 known to be exploited?

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

Use After Free in Linux Kernel

CVE-2022-41218

In drivers/media/dvb-core/dmxdev.c in the Linux kernel through 5.19.10, there is a use-after-free caused by refcount races, affecting dvb_demux_open and dvb_dmxdev_release.

Vulnerability class: Use-After-Free

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

CVSS v3 metric

CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.008 (55.5th percentile), scored 2026-10-05.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Linux Kernel
Debian Linux — versions 11.0

Weakness classification (CWE)

CWE-416 — Use After Free

Public proof-of-concept exploits

References

lore.kernel.org/all/20220908132754.30532-1-tiwai@suse.de/
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/media/dv… (Vendor Advisory)
www.openwall.com/lists/oss-security/2022/09/23/4 (mailing-list, Exploit, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/09/24/2 (mailing-list, Mailing List, Third Party Advisory)
www.openwall.com/lists/oss-security/2022/09/24/1 (mailing-list, Exploit, Mailing List, Third Party Advisory)
www.debian.org/security/2023/dsa-5324 (vendor-advisory, Third Party Advisory)
lists.debian.org/debian-lts-announce/2023/03/msg00000.html (mailing-list)
lists.debian.org/debian-lts-announce/2023/05/msg00006.html (mailing-list)
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/

Frequently asked questions

What is CVE-2022-41218?: CVE-2022-41218 is a medium-severity vulnerability in Linux Kernel, classified under Use After Free. CVSS score: 5.5/10. Published 2022-09-21.
How severe is CVE-2022-41218?: Medium severity. CVSS v3 base score is 5.5 out of 10.
Is CVE-2022-41218 known to be exploited?: 30 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.