Is CVE-2023-32256 in the CISA KEV catalog?

No. CVE-2023-32256 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-32256?

CVE-2023-32256 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-32256?

CVE-2023-32256 has an EPSS score of 0.53% (41th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-32256?

Upgrade linux on debian 12 to 6.1.37-1 or later.

CVE & CISA-KEV Catalog

CVE-2023-32256

HIGH

7.5

CVSS v3

NVD

Description

A flaw was found in the Linux kernel's ksmbd component. A race condition between smb2 close operation and logoff in multichannel connections could result in a use-after-free issue.

CWE-421

How to fix

Remediation Available

linuxDebian

Fixed in:6.1.37-1CVE-2023-32256

Fixed in:6.3.7-1CVE-2023-32256

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

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 VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.53%probability of exploitation in 30 days

41stpercentile

Moderate risk: more likely to be exploited than 41% of all known CVEs.

References

Other references4

Related Vulnerabilities

Other CWE-421 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-43687	Medium	6.5	0.2%	-	-
CVE-2023-40536	Medium	4.3	0.2%	-	-
CVE-2023-41090	Low	1.8	0.1%	-	Fix
CVE-2023-22310	Medium	6.5	0.1%	-	-
CVE-2023-34349	Medium	4.6	0.1%	-	-
CVE-2023-22276	Medium	6.5	0.1%	-	Fix

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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 2026-06-29.