Is CVE-2025-38421 in the CISA KEV catalog?

No. CVE-2025-38421 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2025-38421?

CVE-2025-38421 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2025-38421?

CVE-2025-38421 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2025-38421?

Upgrade linux on debian unstable to 6.16.3-1 or later. Fixes are available for 50 affected products.

CVE & CISA-KEV Catalog

CVE-2025-38421

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: platform/x86/amd: pmf: Use device managed allocations If setting up smart PC fails for any reason then this can lead to a double free when unloading amd-pmf. This is because dev->buf was freed but never set to NULL and is again freed in amd_pmf_remove(). To avoid subtle allocation bugs in failures leading to a double free change all allocations into device managed allocations.

CWE-415

How to fix

Remediation Available

linuxDebian

Fixed in:6.16.3-1CVE-2025-38421

linux-aws-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-azure-6.14Ubuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7834-1

linux-azure-nvidia-6.14Ubuntu

Fixed in:6.14.0-1007.7USN-7834-1

linux-gcp-6.14Ubuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-hwe-6.14Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-6.14.0-1007-azure-nvidiaUbuntu

Fixed in:6.14.0-1007.7USN-7834-1

linux-image-6.14.0-1014-azureUbuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7834-1

linux-image-6.14.0-1014-oemUbuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-6.14.0-1014-realtimeUbuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7833-2

linux-image-6.14.0-1015-awsUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-6.14.0-1015-aws-64kUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-6.14.0-1015-oracleUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-6.14.0-1015-oracle-64kUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-6.14.0-1018-gcpUbuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-6.14.0-1018-gcp-64kUbuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-6.14.0-34-genericUbuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-6.14.0-34-generic-64kUbuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-awsUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-aws-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-aws-64kUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-aws-64k-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-3

linux-image-azureUbuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7834-1

linux-image-azure-6.14Ubuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7834-1

linux-image-azure-nvidiaUbuntu

Fixed in:6.14.0-1007.7USN-7834-1

linux-image-azure-nvidia-6.14Ubuntu

Fixed in:6.14.0-1007.7USN-7834-1

linux-image-gcpUbuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-gcp-6.14Ubuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-gcp-64kUbuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-gcp-64k-6.14Ubuntu

Fixed in:6.14.0-1018.19~24.04.1USN-7833-4

linux-image-generic-6.14Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-generic-64k-6.14Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-generic-64k-hwe-24.04Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-generic-hwe-24.04Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-oem-24.04Ubuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-oem-24.04aUbuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-oem-24.04bUbuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-oem-24.04cUbuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-oem-6.14Ubuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-image-oracleUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-oracle-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-oracle-64kUbuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-oracle-64k-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-image-realtime-6.14Ubuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7833-2

linux-image-realtime-hwe-24.04Ubuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7833-2

linux-image-virtual-6.14Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-image-virtual-hwe-24.04Ubuntu

Fixed in:6.14.0-34.34~24.04.1USN-7856-1

linux-oem-6.14Ubuntu

Fixed in:6.14.0-1014.14USN-7833-1

linux-oracle-6.14Ubuntu

Fixed in:6.14.0-1015.15~24.04.1USN-7833-1

linux-realtime-6.14Ubuntu

Fixed in:6.14.0-1014.14~24.04.1USN-7833-2

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

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.15%probability of exploitation in 30 days

5thpercentile

Low risk: more likely to be exploited than 5% of all known CVEs.

References

Patch2

Related Vulnerabilities

Other CWE-415 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-25136	Medium	6.5	90%	-	Fix
CVE-2018-0101	Critical	10.0	87%	-	Fix
CVE-2003-0545	Critical	9.8	85%	-	Fix
CVE-2019-3829	Medium	5.3	59%	-	Fix
CVE-2026-33824	Critical	9.8	56%	-	Fix
CVE-2021-3407	Medium	5.5	50%	-	Fix

Embed a live status badge for CVE-2025-38421

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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 2025-11-19.