BlackTreeIndependent security intelligence

Full vulnerability report · 2022

CVE-2021-44879High confidence

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference

n/a · n/a

5.5MediumCVSS 3.1

Recommended action

Within 7 days

Medium technical severity with public exploit material referenced by a structured source; 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.

1 package state

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 release	Source package	Vendor state	Fixed version	Evidence
Ubuntu 24.04 LTSnoble · standard archive	`linux-raspi-realtime`	Affected, 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 feed`	Canonical record ↗Source updated 10 Sept 2026

Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

4 current

SSA-613116 · CSAF 2.0 · revision 3 · interimSiemens ProductCERTSSA-613116: Multiple Vulnerabilities in Third-Party Components in SINEC OS before V3.1

3 known not affected

The vendor explicitly states that these products are not affected by this CVE.

RUGGEDCOM RST2428P (6GK6242-6PA00)
SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 family
SCALANCE XCM-/XRM-/XCH-/XRH-300 family

Summary: In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Remediation: No remediation text is recorded.

SSA-398330 · CSAF 2.0 · revision 18 · interimSiemens ProductCERTSSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5

5 known affected

The vendor explicitly identifies these products as affected by this CVE.

SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0)
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)

Summary: In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Remediation: Update to V3.1.5 or later version

SSA-794697 · CSAF 2.0 · revision 9 · interimSiemens ProductCERTSSA-794697: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP before V1.1

1 known affected

The vendor explicitly identifies these products as affected by this CVE.

SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Summary: In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Remediation: Update to V1.1 or later version

SSA-831302 · CSAF 2.0 · revision 5 · interimSiemens ProductCERTSSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0

1 known affected

The vendor explicitly identifies these products as affected by this CVE.

SIMATIC S7-1500 TM MFP - BIOS

Summary: In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.
Remediation: Update to V1.3.0 or later version

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-2021-31680

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

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Patch available

What, why and how

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

What

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

An attacker operating through local access may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference.

Why

The product dereferences a pointer that it expects to be valid but is NULL.

How

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.

Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path: local access → NULL Pointer Dereference → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Local
Privileges required: None: unauthenticated exploitation is possible
User interaction: Required interaction required
Attack complexity: Low: no specialised conditions are recorded
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-476 ↗
CWE-476: NULL Pointer Dereference. The product dereferences a pointer that it expects to be valid but is NULL.
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:L/PR:N/UI:R/S:U/C:N/I:N/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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.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.

UnauthenticatedCWE-476Public exploit reference

Official authority intelligence

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

ENISA EUVD · EUVD-2021-31680Official EUVD mapping

0 linked advisory records.

Official EUVD record

BSI · German · WID-SEC-W-2022-0061Linux Kernel: Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um einen Denial of Service Angriff durchzuführen oder Sicherheitsvorkehrungen zu umgehen.

Official advisory

CERT-FR · French · CERTFR-2025-AVI-0677Multiples vulnérabilités dans les produits Siemens

oductcert/html/ssa-493787.html Bulletin de sécurité Siemens SSA-529291 du 12 août 2025 https://cert-portal.siemens.com/productcert/html/ssa-529291.html Bulletin de sécurité Siemens SSA-613116 du 12 août 2025 https://cert-portal.siemens.com/productcert/html/ssa-613116.html Bulletin de sécurité Siemens SSA-693808 du 12 août 2025 https://cert-portal.siemens.com/productcert/html/ssa-693808.html Bulletin de sécurité Siemens SSA-707630 du 12 août 2025 https://cert-portal.siemens.com/productcert/html/ssa-707630.html Bulletin de sécurité Siemens SSA-894058 du 12 août 2025 https://cert-portal.siemens.com/productcert/html/ssa-894058.html Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-47316 https://www.cve.org/CVERecord?id=CVE-2021-47316 Référence CVE CVE-2022-48666 https://www.cve.org/CVERecord?id=CVE-2022-48666 Référence CVE CVE-2022-48827 https://www.cve.org/CVERecord?id=CVE-2022-48827 Référence CVE CVE-2022-48828 https://www.cve.org/CVERecord?id=CVE-2022-48828 Référence CVE CVE-2022-48829 https://www.cve.org/CVERecord?id=CVE-2022-48829 Référence CVE CVE-2022-48935 https://www.cve.org/CVERecord?id=CVE-2022-48935 Référence CVE CVE-2022-49034 https://www.cve.org/CVERecord?id=CVE-2022-49034 Référence CVE CVE-2023-3567 https://www.cve.org/CVERecord?id=C

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0263Multiples vulnérabilités dans le noyau Linux d'Ubuntu

rity/notices/USN-6686-5 Bulletin de sécurité Ubuntu USN-6701-3 du 25 mars 2024 https://ubuntu.com/security/notices/USN-6701-3 Bulletin de sécurité Ubuntu USN-6704-3 du 25 mars 2024 https://ubuntu.com/security/notices/USN-6704-3 Bulletin de sécurité Ubuntu USN-6704-4 du 28 mars 2024 https://ubuntu.com/security/notices/USN-6704-4 Bulletin de sécurité Ubuntu USN-6707-3 du 25 mars 2024 https://ubuntu.com/security/notices/USN-6707-3 Bulletin de sécurité Ubuntu USN-6707-4 du 28 mars 2024 https://ubuntu.com/security/notices/USN-6707-4 Bulletin de sécurité Ubuntu USN-6716-1 du 25 mars 2024 https://ubuntu.com/security/notices/USN-6716-1 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2023-2002 https://www.cve.org/CVERecord?id=CVE-2023-2002 Référence CVE CVE-2023-22995 https://www.cve.org/CVERecord?id=CVE-2023-22995 Référence CVE CVE-2023-23000 https://www.cve.org/CVERecord?id=CVE-2023-23000 Référence CVE CVE-2023-23004 https://www.cve.org/CVERecord?id=CVE-2023-23004 Référence CVE CVE-2023-3006 https://www.cve.org/CVERecord?id=CVE-2023-3006 Référence CVE CVE-2023-32247 https://www.cve.org/CVERecord?id=CVE-2023-32247 Référence CVE CVE-2023-34256 https://www.cve.org/CVERecord?id=CVE-2023-34256 Référence CVE CVE-2023-39197 https://www.cve.org/CVERecord?id=CVE-

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0243Multiples vulnérabilités dans le noyau Linux d'Ubuntu

rity/notices/USN-6702-2 Bulletin de sécurité Ubuntu USN-6704-1 du 20 mars 2024 https://ubuntu.com/security/notices/USN-6704-1 Bulletin de sécurité Ubuntu USN-6704-2 du 21 mars 2024 https://ubuntu.com/security/notices/USN-6704-2 Bulletin de sécurité Ubuntu USN-6705-1 du 20 mars 2024 https://ubuntu.com/security/notices/USN-6705-1 Bulletin de sécurité Ubuntu USN-6706-1 du 20 mars 2024 https://ubuntu.com/security/notices/USN-6706-1 Bulletin de sécurité Ubuntu USN-6707-1 du 20 mars 2024 https://ubuntu.com/security/notices/USN-6707-1 Bulletin de sécurité Ubuntu USN-6707-2 du 21 mars 2024 https://ubuntu.com/security/notices/USN-6707-2 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2022-20567 https://www.cve.org/CVERecord?id=CVE-2022-20567 Référence CVE CVE-2023-2002 https://www.cve.org/CVERecord?id=CVE-2023-2002 Référence CVE CVE-2023-22995 https://www.cve.org/CVERecord?id=CVE-2023-22995 Référence CVE CVE-2023-23000 https://www.cve.org/CVERecord?id=CVE-2023-23000 Référence CVE CVE-2023-23004 https://www.cve.org/CVERecord?id=CVE-2023-23004 Référence CVE CVE-2023-3006 https://www.cve.org/CVERecord?id=CVE-2023-3006 Référence CVE CVE-2023-30456 https://www.cve.org/CVERecord?id=CVE-2023-30456 Référence CVE CVE-2023-32247 https://www.cve.org/CVERecord?id=CVE-

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0226Multiples vulnérabilités dans le noyau Linux d'Ubuntu

on Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité Ubuntu LSN-0101-1 du 12 mars 2024 https://ubuntu.com/security/notices/LSN-0101-1 Bulletin de sécurité Ubuntu USN-6681-2 du 11 mars 2024 https://ubuntu.com/security/notices/USN-6681-2 Bulletin de sécurité Ubuntu USN-6681-3 du 13 mars 2024 https://ubuntu.com/security/notices/USN-6681-3 Bulletin de sécurité Ubuntu USN-6686-2 du 13 mars 2024 https://ubuntu.com/security/notices/USN-6686-2 Bulletin de sécurité Ubuntu USN-6688-1 du 11 mars 2024 https://ubuntu.com/security/notices/USN-6688-1 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2023-22995 https://www.cve.org/CVERecord?id=CVE-2023-22995 Référence CVE CVE-2023-4134 https://www.cve.org/CVERecord?id=CVE-2023-4134 Référence CVE CVE-2023-4244 https://www.cve.org/CVERecord?id=CVE-2023-4244 Référence CVE CVE-2023-46343 https://www.cve.org/CVERecord?id=CVE-2023-46343 Référence CVE CVE-2023-46838 https://www.cve.org/CVERecord?id=CVE-2023-46838 Référence CVE CVE-2023-46862 https://www.cve.org/CVERecord?id=CVE-2023-46862 Référence CVE CVE-2023-50431 https://www.cve.org/CVERecord?id=CVE-2023-50431 Référence CVE CVE-2023-51779 https://www.cve.org/CVERecord?id=CVE-

Official advisory

CERT-FR · French · CERTFR-2024-AVI-0196Multiples vulnérabilités dans le noyau Linux d'Ubuntu

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu . Certaines d'entre elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, une atteinte à l'intégrité des données et une atteinte à la confidentialité des données.

Official advisory

CERT-FR · French · CERTFR-2022-AVI-697Multiples vulnérabilités dans le noyau Linux de SUSE

à un attaquant de provoquer une exécution de code arbitraire, une atteinte à la confidentialité des données et une élévation de privilèges. Solution Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation). Documentation Bulletin de sécurité SUSE suse-su-20222615-1 du 01 août 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20222615-1/ Référence CVE CVE-2021-26341 https://www.cve.org/CVERecord?id=CVE-2021-26341 Référence CVE CVE-2021-33061 https://www.cve.org/CVERecord?id=CVE-2021-33061 Référence CVE CVE-2021-4204 https://www.cve.org/CVERecord?id=CVE-2021-4204 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45402 https://www.cve.org/CVERecord?id=CVE-2021-45402 Référence CVE CVE-2022-0264 https://www.cve.org/CVERecord?id=CVE-2022-0264 Référence CVE CVE-2022-0494 https://www.cve.org/CVERecord?id=CVE-2022-0494 Référence CVE CVE-2022-0617 https://www.cve.org/CVERecord?id=CVE-2022-0617 Référence CVE CVE-2022-1012 https://www.cve.org/CVERecord?id=CVE-2022-1012 Référence CVE CVE-2022-1016 https://www.cve.org/CVERecord?id=CVE-2022-1016 Référence CVE CVE-2022-1184 https://www.cve.org/CVERecord?id=CVE-2022-1184 Référence CVE CVE-2022-1198 https://www.cve.org/CVERecord?id=CVE-2022-1198

Official advisory

CERT-FR · French · CERTFR-2022-AVI-670Multiples vulnérabilités dans le noyau Linux de SUSE

e/announcement/2022/suse-su-20222516-1/ Bulletin de sécurité SUSE suse-su-20222520-1 du 21 juillet 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20222520-1/ Référence CVE CVE-2017-16525 https://www.cve.org/CVERecord?id=CVE-2017-16525 Référence CVE CVE-2021-26341 https://www.cve.org/CVERecord?id=CVE-2021-26341 Référence CVE CVE-2021-33061 https://www.cve.org/CVERecord?id=CVE-2021-33061 Référence CVE CVE-2021-39698 https://www.cve.org/CVERecord?id=CVE-2021-39698 Référence CVE CVE-2021-4157 https://www.cve.org/CVERecord?id=CVE-2021-4157 Référence CVE CVE-2021-4204 https://www.cve.org/CVERecord?id=CVE-2021-4204 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45402 https://www.cve.org/CVERecord?id=CVE-2021-45402 Référence CVE CVE-2022-0264 https://www.cve.org/CVERecord?id=CVE-2022-0264 Référence CVE CVE-2022-0494 https://www.cve.org/CVERecord?id=CVE-2022-0494 Référence CVE CVE-2022-0617 https://www.cve.org/CVERecord?id=CVE-2022-0617 Référence CVE CVE-2022-1012 https://www.cve.org/CVERecord?id=CVE-2022-1012 Référence CVE CVE-2022-1016 https://www.cve.org/CVERecord?id=CVE-2022-1016 Référence CVE CVE-2022-1116 https://www.cve.org/CVERecord?id=CVE-2022-1116 Référence CVE CVE-2022-1184 https://www.cve.org/CVERecord?id=CVE-2022-1184

Official advisory

CERT-FR · French · CERTFR-2022-AVI-375Multiples vulnérabilités dans le noyau Linux d'Ubuntu

De multiples vulnérabilités ont été découvertes dans le noyau Linux d'Ubuntu. Elles permettent à un attaquant de provoquer une exécution de code arbitraire, un déni de service et une atteinte à la confidentialité des données.

Official advisory

CERT-FR · French · CERTFR-2022-AVI-362Multiples vulnérabilités dans le noyau Linux de SUSE

22/suse-su-20221267-1/ Bulletin de sécurité SUSE 20221268-1 du 19 avril 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221268-1/ Bulletin de sécurité SUSE 20221269-1 du 19 avril 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221269-1/ Bulletin de sécurité SUSE 20221270-1 du 20 avril 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221270-1/ Référence CVE CVE-2021-0920 https://www.cve.org/CVERecord?id=CVE-2021-0920 Référence CVE CVE-2021-39698 https://www.cve.org/CVERecord?id=CVE-2021-39698 Référence CVE CVE-2021-39713 https://www.cve.org/CVERecord?id=CVE-2021-39713 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45868 https://www.cve.org/CVERecord?id=CVE-2021-45868 Référence CVE CVE-2022-0487 https://www.cve.org/CVERecord?id=CVE-2022-0487 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-0516 https://www.cve.org/CVERecord?id=CVE-2022-0516 Référence CVE CVE-2022-0617 https://www.cve.org/CVERecord?id=CVE-2022-0617 Référence CVE CVE-2022-0644 https://www.cve.org/CVERecord?id=CVE-2022-0644 Référence CVE CVE-2022-0812 https://www.cve.org/CVERecord?id=CVE-2022-0812 Référence CVE CVE-2022-0850 https://www.cve.org/CVERecord?id=CVE-2022-0850

Official advisory

CERT-FR · French · CERTFR-2022-AVI-293Multiples vulnérabilités dans le noyau Linux de SUSE

e-su-20221036-1/ Bulletin de sécurité SUSE su-20221037-1 du 30 mars 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221037-1/ Bulletin de sécurité SUSE su-20221038-1 du 30 mars 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221038-1/ Bulletin de sécurité SUSE su-20221039-1 du 30 mars 2022 https://www.suse.com/support/update/announcement/2022/suse-su-20221039-1/ Référence CVE CVE-2021-0920 https://www.cve.org/CVERecord?id=CVE-2021-0920 Référence CVE CVE-2021-39657 https://www.cve.org/CVERecord?id=CVE-2021-39657 Référence CVE CVE-2021-39698 https://www.cve.org/CVERecord?id=CVE-2021-39698 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45402 https://www.cve.org/CVERecord?id=CVE-2021-45402 Référence CVE CVE-2022-0487 https://www.cve.org/CVERecord?id=CVE-2022-0487 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-0516 https://www.cve.org/CVERecord?id=CVE-2022-0516 Référence CVE CVE-2022-0617 https://www.cve.org/CVERecord?id=CVE-2022-0617 Référence CVE CVE-2022-0644 https://www.cve.org/CVERecord?id=CVE-2022-0644 Référence CVE CVE-2022-23036 https://www.cve.org/CVERecord?id=CVE-2022-23036 Référence CVE CVE-2022-23037 https://www.cve.org/CVERecord?id=CVE-2022-2

Official advisory

CERT-FR · French · CERTFR-2022-AVI-229Multiples vulnérabilités dans le noyau Linux de SUSE

E 202214905-1 du 08 mars 2022 https://www.suse.com/support/update/announcement/2022/suse-su-202214905-1/ Référence CVE CVE-2016-10905 https://www.cve.org/CVERecord?id=CVE-2016-10905 Référence CVE CVE-2019-0136 https://www.cve.org/CVERecord?id=CVE-2019-0136 Référence CVE CVE-2020-12770 https://www.cve.org/CVERecord?id=CVE-2020-12770 Référence CVE CVE-2020-27820 https://www.cve.org/CVERecord?id=CVE-2020-27820 Référence CVE CVE-2021-0920 https://www.cve.org/CVERecord?id=CVE-2021-0920 Référence CVE CVE-2021-3753 https://www.cve.org/CVERecord?id=CVE-2021-3753 Référence CVE CVE-2021-4155 https://www.cve.org/CVERecord?id=CVE-2021-4155 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45095 https://www.cve.org/CVERecord?id=CVE-2021-45095 Référence CVE CVE-2022-0001 https://www.cve.org/CVERecord?id=CVE-2022-0001 Référence CVE CVE-2022-0002 https://www.cve.org/CVERecord?id=CVE-2022-0002 Référence CVE CVE-2022-0487 https://www.cve.org/CVERecord?id=CVE-2022-0487 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-0516 https://www.cve.org/CVERecord?id=CVE-2022-0516 Référence CVE CVE-2022-0617 https://www.cve.org/CVERecord?id=CVE-2022-0617 Référence CVE CVE-2022-0644 https://www.cve.org/CVERecord?id=CVE-2022-0644

Official advisory

CERT-FR · French · CERTFR-2022-AVI-176Multiples vulnérabilités dans le noyau Linux d'Ubuntu

VERecord?id=CVE-2021-3679 Référence CVE CVE-2021-38204 https://www.cve.org/CVERecord?id=CVE-2021-38204 Référence CVE CVE-2021-39685 https://www.cve.org/CVERecord?id=CVE-2021-39685 Référence CVE CVE-2021-4083 https://www.cve.org/CVERecord?id=CVE-2021-4083 Référence CVE CVE-2021-4155 https://www.cve.org/CVERecord?id=CVE-2021-4155 Référence CVE CVE-2021-42008 https://www.cve.org/CVERecord?id=CVE-2021-42008 Référence CVE CVE-2021-4202 https://www.cve.org/CVERecord?id=CVE-2021-4202 Référence CVE CVE-2021-43975 https://www.cve.org/CVERecord?id=CVE-2021-43975 Référence CVE CVE-2021-43976 https://www.cve.org/CVERecord?id=CVE-2021-43976 Référence CVE CVE-2021-44879 https://www.cve.org/CVERecord?id=CVE-2021-44879 Référence CVE CVE-2021-45485 https://www.cve.org/CVERecord?id=CVE-2021-45485 Référence CVE CVE-2022-0330 https://www.cve.org/CVERecord?id=CVE-2022-0330 Référence CVE CVE-2022-0435 https://www.cve.org/CVERecord?id=CVE-2022-0435 Référence CVE CVE-2022-0492 https://www.cve.org/CVERecord?id=CVE-2022-0492 Référence CVE CVE-2022-22942 https://www.cve.org/CVERecord?id=CVE-2022-22942 Référence CVE CVE-2022-24448 https://www.cve.org/CVERecord?id=CVE-2022-24448 Référence CVE CVE-2022-24959 https://www.cve.org/CVERecord?id=CVE-2022-24959 Gestion détaillée du document le 23 février 2022 Version initiale Al

Official advisory

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: SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0); SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
Action: Update to V3.1.5 or later version
Workaround: No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.

Evidence and provenance

Published 13 Feb 2022 · Last source change 4 Aug 2024, 04:32 UTC · CWE-476 · NULL Pointer Dereference

CVE recordCVE.org · 5.1

CVSS sourceNIST NVD

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-2021-31680

Product sourceVendor CSAF · Siemens ProductCERT

Remediation sourceVendor CSAF · Siemens ProductCERT

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.

2022-02-13CVE published

2024-08-04Fixed release or patch reference recorded

ENISA EUVD · EUVD-2021-31680↗Vendor CSAF · Siemens ProductCERT↗CVE authority or vendor reference↗Public exploit reference↗Patch or update reference↗Official CVE record (CNA and ADP data)↗NVD record↗

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.

In gc_data_segment in fs/f2fs/gc.c in the Linux kernel before 5.16.3, special files are not considered, leading to a move_data_page NULL pointer dereference

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

EUVD-2021-31680

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

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