Is CVE-2023-45898 in the CISA KEV catalog?

No. CVE-2023-45898 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-45898?

CVE-2023-45898 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-45898?

CVE-2023-45898 has an EPSS score of 0.27% (19th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-45898?

Upgrade linux on debian 13 to 6.5.6-1 or later. Fixes are available for 41 affected products.

CVE & CISA-KEV Catalog

CVE-2023-45898

HIGH

7.8

CVSS v3

NVD

Description

The Linux kernel before 6.5.4 has an es1 use-after-free in fs/ext4/extents_status.c, related to ext4_es_insert_extent.

CWE-416Use After Free

How to fix

Remediation Available

linuxDebian

Fixed in:6.5.6-1CVE-2023-45898

linuxUbuntu

Fixed in:6.5.0-14.14USN-6536-1

linux-awsUbuntu

Fixed in:6.5.0-1011.11USN-6536-1

linux-azureUbuntu

Fixed in:6.5.0-1010.10USN-6573-1

linux-gcpUbuntu

Fixed in:6.5.0-1010.10USN-6537-1

linux-image-6.5.0-1005-starfiveUbuntu

Fixed in:6.5.0-1005.6USN-6536-1

linux-image-6.5.0-1007-laptopUbuntu

Fixed in:6.5.0-1007.10USN-6536-1

linux-image-6.5.0-1008-raspiUbuntu

Fixed in:6.5.0-1008.11USN-6536-1

linux-image-6.5.0-1009-oemUbuntu

Fixed in:6.5.0-1009.10USN-6536-1

linux-image-6.5.0-1010-azureUbuntu

Fixed in:6.5.0-1010.10USN-6573-1

linux-image-6.5.0-1010-azure-fdeUbuntu

Fixed in:6.5.0-1010.10USN-6573-1

linux-image-6.5.0-1010-gcpUbuntu

Fixed in:6.5.0-1010.10USN-6537-1

linux-image-6.5.0-1011-awsUbuntu

Fixed in:6.5.0-1011.11USN-6536-1

linux-image-6.5.0-1013-oracleUbuntu

Fixed in:6.5.0-1013.13USN-6536-1

linux-image-6.5.0-14-genericUbuntu

Fixed in:6.5.0-14.14USN-6536-1

linux-image-6.5.0-14-generic-64kUbuntu

Fixed in:6.5.0-14.14USN-6536-1

linux-image-6.5.0-14-lowlatencyUbuntu

Fixed in:6.5.0-14.14.1USN-6536-1

linux-image-6.5.0-14-lowlatency-64kUbuntu

Fixed in:6.5.0-14.14.1USN-6536-1

linux-image-awsUbuntu

Fixed in:6.5.0.1011.11USN-6536-1

linux-image-azureUbuntu

Fixed in:6.5.0.1010.12USN-6573-1

linux-image-azure-fdeUbuntu

Fixed in:6.5.0.1010.12USN-6573-1

linux-image-gcpUbuntu

Fixed in:6.5.0.1010.10USN-6537-1

linux-image-genericUbuntu

Fixed in:6.5.0.14.16USN-6536-1

linux-image-generic-64kUbuntu

Fixed in:6.5.0.14.16USN-6536-1

linux-image-generic-lpaeUbuntu

Fixed in:6.5.0.14.16USN-6536-1

linux-image-kvmUbuntu

Fixed in:6.5.0.14.16USN-6536-1

linux-image-laptop-23.10Ubuntu

Fixed in:6.5.0.1007.10USN-6536-1

linux-image-lowlatencyUbuntu

Fixed in:6.5.0.14.14.12USN-6536-1

linux-image-lowlatency-64kUbuntu

Fixed in:6.5.0.14.14.12USN-6536-1

linux-image-oem-22.04dUbuntu

Fixed in:6.5.0.1009.11USN-6536-1

linux-image-oracleUbuntu

Fixed in:6.5.0.1013.13USN-6536-1

linux-image-raspiUbuntu

Fixed in:6.5.0.1008.9USN-6536-1

linux-image-raspi-nolpaeUbuntu

Fixed in:6.5.0.1008.9USN-6536-1

linux-image-starfiveUbuntu

Fixed in:6.5.0.1005.7USN-6536-1

linux-image-virtualUbuntu

Fixed in:6.5.0.14.16USN-6536-1

linux-laptopUbuntu

Fixed in:6.5.0-1007.10USN-6536-1

linux-lowlatencyUbuntu

Fixed in:6.5.0-14.14.1USN-6536-1

linux-oem-6.5Ubuntu

Fixed in:6.5.0-1009.10USN-6536-1

linux-oracleUbuntu

Fixed in:6.5.0-1013.13USN-6536-1

linux-raspiUbuntu

Fixed in:6.5.0-1008.11USN-6536-1

linux-starfiveUbuntu

Fixed in:6.5.0-1005.6USN-6536-1

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 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

0.27%probability of exploitation in 30 days

19thpercentile

Low risk: more likely to be exploited than 19% of all known CVEs.

References

Patch3

Third-Party Advisory1

lore.kernel.org

Release Notes1

cdn.kernel.org

Other references2

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	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 2026-05-12.