Is CVE-2022-49621 in the CISA KEV catalog?

No. CVE-2022-49621 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2022-49621?

CVE-2022-49621 has a CVSS v3 base score of 5.5 (MEDIUM).

What is the EPSS score for CVE-2022-49621?

CVE-2022-49621 has an EPSS score of 0.24% (15th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2022-49621?

Upgrade linux on debian 11 to 5.10.136-1 or later.

CVE & CISA-KEV Catalog

CVE-2022-49621

MEDIUM

5.5

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: cpufreq: pmac32-cpufreq: Fix refcount leak bug In pmac_cpufreq_init_MacRISC3(), we need to add corresponding of_node_put() for the three node pointers whose refcount have been incremented by of_find_node_by_name().

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.136-1CVE-2022-49621

Fixed in:5.18.14-1CVE-2022-49621

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.24%probability of exploitation in 30 days

15thpercentile

Low risk: more likely to be exploited than 15% of all known CVEs.

References

Patch8

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-01.