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Full vulnerability report · 2025
CVE-2023-53572High confidence

clk: imx: scu: use _safe list iterator to avoid a use after free

Linux · Linux

7.0HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

9 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
Ubuntu 24.04 LTSnoble · standard archivelinux-azure-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-gcp-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-intelAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-lowlatency-hwe-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-oem-6.11Affected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspi-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-realtimeAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-riscvAffected, no fix publishedCanonical OVAL identifies this running kernel flavour as affected and does not publish a fixed package version in this definition.Not published in this feedCanonical record ↗Source updated 9 Sept 2026
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2025-32323

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Patch available
01

What, why and how

In the Linux kernel, the following vulnerability has been resolved: clk: imx: scu: use _safe list iterator to avoid a use after free This loop is freeing "clk" so it needs to use list_for_each_entry_safe(). Otherwise it dereferences a freed variable to get the next item on the loop.

What

In the Linux kernel, the following vulnerability has been resolved: clk: imx: scu: use _safe list iterator to avoid a use after free This loop is freeing "clk" so it needs to use list_for_each_entry_safe(). Otherwise it dereferences a freed variable to get the next item on the loop.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In the Linux kernel, the following vulnerability has been resolved: clk: imx: scu: use _safe list iterator to avoid a use after free This loop is freeing "clk" so it needs to use list_for_each_entry_safe(). Otherwise it dereferences a freed variable to get the next item on the loop.

Why

The program can continue using memory after it has been released, producing unsafe and attacker-influenceable behaviour.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Use After Free → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-416

CWE-416: Use After Free. The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-416
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-W-2025-2194Linux Kernel: Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in Linux Kernel ausnutzen, um nicht näher spezifizierte Angriffe durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1073Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53560 Référence CVE CVE-2023-53562 https://www.cve.org/CVERecord?id=CVE-2023-53562 Référence CVE CVE-2023-53563 https://www.cve.org/CVERecord?id=CVE-2023-53563 Référence CVE CVE-2023-53564 https://www.cve.org/CVERecord?id=CVE-2023-53564 Référence CVE CVE-2023-53566 https://www.cve.org/CVERecord?id=CVE-2023-53566 Référence CVE CVE-2023-53567 https://www.cve.org/CVERecord?id=CVE-2023-53567 Référence CVE CVE-2023-53568 https://www.cve.org/CVERecord?id=CVE-2023-53568 Référence CVE CVE-2023-53570 https://www.cve.org/CVERecord?id=CVE-2023-53570 Référence CVE CVE-2023-53571 https://www.cve.org/CVERecord?id=CVE-2023-53571 Référence CVE CVE-2023-53572 https://www.cve.org/CVERecord?id=CVE-2023-53572 Référence CVE CVE-2023-53574 https://www.cve.org/CVERecord?id=CVE-2023-53574 Référence CVE CVE-2023-53575 https://www.cve.org/CVERecord?id=CVE-2023-53575 Référence CVE CVE-2023-53577 https://www.cve.org/CVERecord?id=CVE-2023-53577 Référence CVE CVE-2023-53578 https://www.cve.org/CVERecord?id=CVE-2023-53578 Référence CVE CVE-2023-53579 https://www.cve.org/CVERecord?id=CVE-2023-53579 Référence CVE CVE-2023-53580 https://www.cve.org/CVERecord?id=CVE-2023-53580 Référence CVE CVE-2023-53581 https://www.cve.org/CVERecord?id=CVE-2023-53581 Référence CVE CVE-2023-53582 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1047Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53557 Référence CVE CVE-2023-53558 https://www.cve.org/CVERecord?id=CVE-2023-53558 Référence CVE CVE-2023-53559 https://www.cve.org/CVERecord?id=CVE-2023-53559 Référence CVE CVE-2023-53560 https://www.cve.org/CVERecord?id=CVE-2023-53560 Référence CVE CVE-2023-53563 https://www.cve.org/CVERecord?id=CVE-2023-53563 Référence CVE CVE-2023-53564 https://www.cve.org/CVERecord?id=CVE-2023-53564 Référence CVE CVE-2023-53566 https://www.cve.org/CVERecord?id=CVE-2023-53566 Référence CVE CVE-2023-53568 https://www.cve.org/CVERecord?id=CVE-2023-53568 Référence CVE CVE-2023-53570 https://www.cve.org/CVERecord?id=CVE-2023-53570 Référence CVE CVE-2023-53572 https://www.cve.org/CVERecord?id=CVE-2023-53572 Référence CVE CVE-2023-53574 https://www.cve.org/CVERecord?id=CVE-2023-53574 Référence CVE CVE-2023-53575 https://www.cve.org/CVERecord?id=CVE-2023-53575 Référence CVE CVE-2023-53577 https://www.cve.org/CVERecord?id=CVE-2023-53577 Référence CVE CVE-2023-53579 https://www.cve.org/CVERecord?id=CVE-2023-53579 Référence CVE CVE-2023-53580 https://www.cve.org/CVERecord?id=CVE-2023-53580 Référence CVE CVE-2023-53581 https://www.cve.org/CVERecord?id=CVE-2023-53581 Référence CVE CVE-2023-53582 https://www.cve.org/CVERecord?id=CVE-2023-53582 Référence CVE CVE-2023-53583 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1032Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53560 Référence CVE CVE-2023-53562 https://www.cve.org/CVERecord?id=CVE-2023-53562 Référence CVE CVE-2023-53563 https://www.cve.org/CVERecord?id=CVE-2023-53563 Référence CVE CVE-2023-53564 https://www.cve.org/CVERecord?id=CVE-2023-53564 Référence CVE CVE-2023-53566 https://www.cve.org/CVERecord?id=CVE-2023-53566 Référence CVE CVE-2023-53567 https://www.cve.org/CVERecord?id=CVE-2023-53567 Référence CVE CVE-2023-53568 https://www.cve.org/CVERecord?id=CVE-2023-53568 Référence CVE CVE-2023-53570 https://www.cve.org/CVERecord?id=CVE-2023-53570 Référence CVE CVE-2023-53571 https://www.cve.org/CVERecord?id=CVE-2023-53571 Référence CVE CVE-2023-53572 https://www.cve.org/CVERecord?id=CVE-2023-53572 Référence CVE CVE-2023-53574 https://www.cve.org/CVERecord?id=CVE-2023-53574 Référence CVE CVE-2023-53575 https://www.cve.org/CVERecord?id=CVE-2023-53575 Référence CVE CVE-2023-53576 https://www.cve.org/CVERecord?id=CVE-2023-53576 Référence CVE CVE-2023-53577 https://www.cve.org/CVERecord?id=CVE-2023-53577 Référence CVE CVE-2023-53578 https://www.cve.org/CVERecord?id=CVE-2023-53578 Référence CVE CVE-2023-53579 https://www.cve.org/CVERecord?id=CVE-2023-53579 Référence CVE CVE-2023-53580 https://www.cve.org/CVERecord?id=CVE-2023-53580 Référence CVE CVE-2023-53581 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1009Multiples vulnérabilités dans le noyau Linux de SUSE

d?id=CVE-2023-53555 Référence CVE CVE-2023-53556 https://www.cve.org/CVERecord?id=CVE-2023-53556 Référence CVE CVE-2023-53557 https://www.cve.org/CVERecord?id=CVE-2023-53557 Référence CVE CVE-2023-53558 https://www.cve.org/CVERecord?id=CVE-2023-53558 Référence CVE CVE-2023-53559 https://www.cve.org/CVERecord?id=CVE-2023-53559 Référence CVE CVE-2023-53560 https://www.cve.org/CVERecord?id=CVE-2023-53560 Référence CVE CVE-2023-53563 https://www.cve.org/CVERecord?id=CVE-2023-53563 Référence CVE CVE-2023-53568 https://www.cve.org/CVERecord?id=CVE-2023-53568 Référence CVE CVE-2023-53570 https://www.cve.org/CVERecord?id=CVE-2023-53570 Référence CVE CVE-2023-53572 https://www.cve.org/CVERecord?id=CVE-2023-53572 Référence CVE CVE-2023-53574 https://www.cve.org/CVERecord?id=CVE-2023-53574 Référence CVE CVE-2023-53575 https://www.cve.org/CVERecord?id=CVE-2023-53575 Référence CVE CVE-2023-53577 https://www.cve.org/CVERecord?id=CVE-2023-53577 Référence CVE CVE-2023-53579 https://www.cve.org/CVERecord?id=CVE-2023-53579 Référence CVE CVE-2023-53580 https://www.cve.org/CVERecord?id=CVE-2023-53580 Référence CVE CVE-2023-53581 https://www.cve.org/CVERecord?id=CVE-2023-53581 Référence CVE CVE-2023-53583 https://www.cve.org/CVERecord?id=CVE-2023-53583 Référence CVE CVE-2023-53585 https://www.cve.org/CVERecord?id=

Official advisory
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Patch available
Affected
77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 < f95ff838ac39f861d1f95a0f3bbb1e01c2517d79; 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 < 08cc7cd2c2a29a2abf5bceb8f048c0734d3694ba; 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 < 3d90921f91fc6a8c801d527bb5848c99e335c1cf; 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 < 0a719f0e4b6f233979e219baff73923e76a96e09; 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 < 632c60ecd25dbacee54d5581fe3aeb834b57010a; 5.11
Fixed
< 5.11; 5.15.121 ≤ 5.15.*; 6.1.39 ≤ 6.1.*; 6.3.13 ≤ 6.3.*; 6.4.4 ≤ 6.4.*; 6.5 ≤ *
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 4 Oct 2025 · Last source change 5 Aug 2026, 09:14 UTC · CWE-416 · Use After Free

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2025-32323
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-53572 · cve.blacktree.nl