SARA / Free Tools / CVE / CVE-2022-41218

CVE-2022-41218 — In drivers/media/dvb-core/dmxdev

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.

CVSS

5.5 MEDIUM

EPSS

0.83% (top 43.20%)

CWE

—

Published

2022-09-21T07:15:08.643

Last modified

2026-10-14T18:17:05.880

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

01What is this vulnerability?

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.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

Patch to a fixed version listed in the vendor advisory (see references below).
Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

Published: 2022-09-21T07:15:08.643
Last modified: 2026-10-14T18:17:05.880

09References

www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/23/4
www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/24/1
www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/24/2
git.kernel.org — https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=fd3d9…
git.kernel.org — https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/log/drivers/m…
lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/03/msg00000.html
lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/05/msg00006.html
lore.kernel.org — https://lore.kernel.org/all/20220908132754.30532-1-tiwai%40suse.de/
www.debian.org — https://www.debian.org/security/2023/dsa-5324
www.openwall.com — http://www.openwall.com/lists/oss-security/2022/09/23/4

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