Is CVE-2023-53000 in the CISA KEV catalog?

No. CVE-2023-53000 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-53000?

CVE-2023-53000 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-53000?

CVE-2023-53000 has an EPSS score of 0.20% (10th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-53000?

Upgrade linux on debian 11 to 5.10.178-1 or later.

CVE & CISA-KEV Catalog

CVE-2023-53000

HIGH

7.8

CVSS v3

NVD

Description

In the Linux kernel, the following vulnerability has been resolved: netlink: prevent potential spectre v1 gadgets Most netlink attributes are parsed and validated from __nla_validate_parse() or validate_nla() u16 type = nla_type(nla); if (type == 0 || type > maxtype) { /* error or continue */ } @type is then used as an array index and can be used as a Spectre v1 gadget. array_index_nospec() can be used to prevent leaking content of kernel memory to malicious users. This should take care of vast majority of netlink uses, but an audit is needed to take care of others where validation is not yet centralized in core netlink functions.

CWE-129

How to fix

Remediation Available

linuxDebian

Fixed in:5.10.178-1CVE-2023-53000

Fixed in:6.1.11-1CVE-2023-53000

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

0.20%probability of exploitation in 30 days

10thpercentile

Low risk: more likely to be exploited than 10% of all known CVEs.

References

Patch5

Related Vulnerabilities

Other CWE-129 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-35592	Medium	6.3	51%	-	Fix
CVE-2021-35598	Medium	6.3	50%	-	Fix
CVE-2021-35594	Medium	6.3	50%	-	Fix
CVE-2022-35737	High	7.5	19%	-	Fix
CVE-2014-6317	High	7.1	18%	-	-
CVE-2023-40477	High	7.8	13%	-	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 2025-10-30.