Is CVE-2023-21264 in the CISA KEV catalog?

No. CVE-2023-21264 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-21264?

CVE-2023-21264 has a CVSS v3 base score of 6.7 (MEDIUM).

What is the EPSS score for CVE-2023-21264?

CVE-2023-21264 has an EPSS score of 0.15% (5th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-21264?

Upgrade linux on debian 13 to 6.3.7-1 or later. Fixes are available for 60 affected products.

CVE & CISA-KEV Catalog

CVE-2023-21264

MEDIUM

6.7

CVSS v3

NVD

Description

In multiple functions of mem_protect.c, there is a possible way to access hypervisor memory due to a memory access check in the wrong place. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation.

CWE-119Buffer Overflow

How to fix

Remediation Available

linuxDebian

Fixed in:6.3.7-1CVE-2023-21264

linuxUbuntu

Fixed in:6.2.0-33.33USN-6383-1

linux-awsUbuntu

Fixed in:6.2.0-1012.12USN-6383-1

linux-aws-6.2Ubuntu

Fixed in:6.2.0-1012.12~22.04.1USN-6383-1

linux-azureUbuntu

Fixed in:6.2.0-1012.12USN-6383-1

linux-azure-6.2Ubuntu

Fixed in:6.2.0-1012.12~22.04.1USN-6383-1

linux-azure-fde-6.2Ubuntu

Fixed in:6.2.0-1012.12~22.04.1.1USN-6383-1

linux-gcpUbuntu

Fixed in:6.2.0-1014.14USN-6383-1

linux-gcp-6.2Ubuntu

Fixed in:6.2.0-1014.14~22.04.1USN-6383-1

linux-hwe-6.2Ubuntu

Fixed in:6.2.0-33.33~22.04.1USN-6383-1

linux-ibmUbuntu

Fixed in:6.2.0-1010.10USN-6383-1

linux-image-6.2.0-1005-starfiveUbuntu

Fixed in:6.2.0-1005.6USN-6383-1

linux-image-6.2.0-1010-ibmUbuntu

Fixed in:6.2.0-1010.10USN-6383-1

linux-image-6.2.0-1011-nvidiaUbuntu

Fixed in:6.2.0-1011.11USN-6466-1

linux-image-6.2.0-1011-nvidia-64kUbuntu

Fixed in:6.2.0-1011.11USN-6466-1

linux-image-6.2.0-1012-awsUbuntu

Fixed in:6.2.0-1012.12~22.04.1USN-6383-1

Fixed in:6.2.0-1012.12USN-6383-1

linux-image-6.2.0-1012-azureUbuntu

Fixed in:6.2.0-1012.12~22.04.1USN-6383-1

Fixed in:6.2.0-1012.12USN-6383-1

linux-image-6.2.0-1012-azure-fdeUbuntu

Fixed in:6.2.0-1012.12~22.04.1.1USN-6383-1

linux-image-6.2.0-1012-oracleUbuntu

Fixed in:6.2.0-1012.12USN-6383-1

linux-image-6.2.0-1013-kvmUbuntu

Fixed in:6.2.0-1013.13USN-6383-1

linux-image-6.2.0-1013-lowlatencyUbuntu

Fixed in:6.2.0-1013.13~22.04.1USN-6383-1

Fixed in:6.2.0-1013.13USN-6383-1

linux-image-6.2.0-1013-lowlatency-64kUbuntu

Fixed in:6.2.0-1013.13~22.04.1USN-6383-1

Fixed in:6.2.0-1013.13USN-6383-1

linux-image-6.2.0-1013-raspiUbuntu

Fixed in:6.2.0-1013.15USN-6383-1

linux-image-6.2.0-1014-gcpUbuntu

Fixed in:6.2.0-1014.14~22.04.1USN-6383-1

Fixed in:6.2.0-1014.14USN-6383-1

linux-image-6.2.0-33-genericUbuntu

Fixed in:6.2.0-33.33~22.04.1USN-6383-1

Fixed in:6.2.0-33.33+1USN-6383-1

linux-image-6.2.0-33-generic-64kUbuntu

Fixed in:6.2.0-33.33~22.04.1USN-6383-1

Fixed in:6.2.0-33.33+1USN-6383-1

linux-image-6.2.0-33-generic-lpaeUbuntu

Fixed in:6.2.0-33.33~22.04.1USN-6383-1

Fixed in:6.2.0-33.33USN-6383-1

linux-image-awsUbuntu

Fixed in:6.2.0.1012.12~22.04.1USN-6383-1

Fixed in:6.2.0.1012.13USN-6383-1

linux-image-azureUbuntu

Fixed in:6.2.0.1012.12~22.04.1USN-6383-1

Fixed in:6.2.0.1012.12USN-6383-1

linux-image-azure-fdeUbuntu

Fixed in:6.2.0.1012.12~22.04.1.9USN-6383-1

linux-image-gcpUbuntu

Fixed in:6.2.0.1014.14~22.04.1USN-6383-1

Fixed in:6.2.0.1014.14USN-6383-1

linux-image-genericUbuntu

Fixed in:6.2.0.33.33USN-6383-1

linux-image-generic-64kUbuntu

Fixed in:6.2.0.33.33USN-6383-1

linux-image-generic-64k-hwe-22.04Ubuntu

Fixed in:6.2.0.33.33~22.04.10USN-6383-1

linux-image-generic-hwe-22.04Ubuntu

Fixed in:6.2.0.33.33~22.04.10USN-6383-1

linux-image-generic-lpaeUbuntu

Fixed in:6.2.0.33.33USN-6383-1

linux-image-generic-lpae-hwe-22.04Ubuntu

Fixed in:6.2.0.33.33~22.04.10USN-6383-1

linux-image-ibmUbuntu

Fixed in:6.2.0.1010.10USN-6383-1

linux-image-kvmUbuntu

Fixed in:6.2.0.1013.13USN-6383-1

linux-image-lowlatencyUbuntu

Fixed in:6.2.0.1013.13USN-6383-1

linux-image-lowlatency-64kUbuntu

Fixed in:6.2.0.1013.13USN-6383-1

linux-image-lowlatency-64k-hwe-22.04Ubuntu

Fixed in:6.2.0.1013.13~22.04.10USN-6383-1

linux-image-lowlatency-hwe-22.04Ubuntu

Fixed in:6.2.0.1013.13~22.04.10USN-6383-1

linux-image-nvidia-6.2Ubuntu

Fixed in:6.2.0.1011.13USN-6466-1

linux-image-nvidia-64k-6.2Ubuntu

Fixed in:6.2.0.1011.13USN-6466-1

linux-image-nvidia-64k-hwe-22.04Ubuntu

Fixed in:6.2.0.1011.13USN-6466-1

linux-image-nvidia-hwe-22.04Ubuntu

Fixed in:6.2.0.1011.13USN-6466-1

linux-image-oracleUbuntu

Fixed in:6.2.0.1012.12USN-6383-1

linux-image-raspiUbuntu

Fixed in:6.2.0.1013.16USN-6383-1

linux-image-raspi-nolpaeUbuntu

Fixed in:6.2.0.1013.16USN-6383-1

linux-image-starfiveUbuntu

Fixed in:6.2.0.1005.8USN-6383-1

linux-image-virtualUbuntu

Fixed in:6.2.0.33.33USN-6383-1

linux-image-virtual-hwe-22.04Ubuntu

Fixed in:6.2.0.33.33~22.04.10USN-6383-1

linux-kvmUbuntu

Fixed in:6.2.0-1013.13USN-6383-1

linux-lowlatencyUbuntu

Fixed in:6.2.0-1013.13USN-6383-1

linux-lowlatency-hwe-6.2Ubuntu

Fixed in:6.2.0-1013.13~22.04.1USN-6383-1

linux-nvidia-6.2Ubuntu

Fixed in:6.2.0-1011.11USN-6466-1

linux-oracleUbuntu

Fixed in:6.2.0-1012.12USN-6383-1

linux-raspiUbuntu

Fixed in:6.2.0-1013.15USN-6383-1

linux-starfiveUbuntu

Fixed in:6.2.0-1005.6USN-6383-1

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 RequiredHigh

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:L/AC:L/PR:H/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

Patch3

Related Vulnerabilities

Other CWE-119 (Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-4966	Critical	9.4	100%	KEV + Ransom	Fix
CVE-2017-11882	High	7.8	100%	KEV + Ransom	-
CVE-2020-0796	Critical	10.0	100%	KEV + Ransom	-
CVE-2008-4250	Critical	9.8	99%	KEV	-
CVE-2017-15944	Critical	9.8	98%	KEV	Fix
CVE-2015-0014	High	10.0	97%	-	-

Embed a live status badge for CVE-2023-21264

Markdown

[![CVE-2023-21264](https://tridentstack.com/cve/badge/CVE-2023-21264.svg)](https://tridentstack.com/cve/CVE-2023-21264)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-21264"><img src="https://tridentstack.com/cve/badge/CVE-2023-21264.svg" alt="CVE-2023-21264"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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 2024-11-21.