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Full vulnerability report · 2024
CVE-2024-0193High confidence

Kernel: netfilter: use-after-free in nft_trans_gc_catchall_sync leads to privilege escalation

Unknown · Unknown

7.8HighCVSS 3.1
Recommended action
Within 7 days

High 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.

3 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-fdeAffected, 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 8 Sept 2026
Ubuntu 24.04 LTSnoble · standard archivelinux-raspiAffected, 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 8 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 8 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.

1 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
A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.
Remediation
No remediation text is recorded.
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-2024-15992

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

Patch available
01

What, why and how

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

What

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

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

A use-after-free flaw was found in the netfilter subsystem of the Linux kernel. If the catchall element is garbage-collected when the pipapo set is removed, the element can be deactivated twice. This can cause a use-after-free issue on an NFT_CHAIN object or NFT_OBJECT object, allowing a local unprivileged user with CAP_NET_ADMIN capability to escalate their privileges on the system.

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.
Reference recorded

CISA Vulnrichment records proof-of-concept exploitation in its SSVC data. BlackTree has not independently executed or validated exploit material.

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
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-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:L/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.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.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-416Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2024-0006Linux Kernel: Schwachstelle ermöglicht Privilegieneskalation

Ein lokaler Angreifer kann eine Schwachstelle im Linux Kernel ausnutzen, um seine Privilegien zu erhöhen.

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

e.org/CVERecord?id=CVE-2023-52917 Référence CVE CVE-2023-52919 https://www.cve.org/CVERecord?id=CVE-2023-52919 Référence CVE CVE-2023-5678 https://www.cve.org/CVERecord?id=CVE-2023-5678 Référence CVE CVE-2023-5717 https://www.cve.org/CVERecord?id=CVE-2023-5717 Référence CVE CVE-2023-6040 https://www.cve.org/CVERecord?id=CVE-2023-6040 Référence CVE CVE-2023-6121 https://www.cve.org/CVERecord?id=CVE-2023-6121 Référence CVE CVE-2023-6606 https://www.cve.org/CVERecord?id=CVE-2023-6606 Référence CVE CVE-2023-6931 https://www.cve.org/CVERecord?id=CVE-2023-6931 Référence CVE CVE-2023-6932 https://www.cve.org/CVERecord?id=CVE-2023-6932 Référence CVE CVE-2024-0193 https://www.cve.org/CVERecord?id=CVE-2024-0193 Référence CVE CVE-2024-0584 https://www.cve.org/CVERecord?id=CVE-2024-0584 Référence CVE CVE-2024-0646 https://www.cve.org/CVERecord?id=CVE-2024-0646 Référence CVE CVE-2024-0841 https://www.cve.org/CVERecord?id=CVE-2024-0841 Référence CVE CVE-2024-1086 https://www.cve.org/CVERecord?id=CVE-2024-1086 Référence CVE CVE-2024-26581 https://www.cve.org/CVERecord?id=CVE-2024-26581 Référence CVE CVE-2024-26593 https://www.cve.org/CVERecord?id=CVE-2024-26593 Référence CVE CVE-2024-26598 https://www.cve.org/CVERecord?id=CVE-2024-26598 Référence CVE CVE-2024-26600 https://www.cve.org/CVERecord?id=CVE-2024-

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0577Multiples vulnérabilités dans le noyau Linux de Red Hat

d?id=CVE-2023-52686 Référence CVE CVE-2023-52700 https://www.cve.org/CVERecord?id=CVE-2023-52700 Référence CVE CVE-2023-52703 https://www.cve.org/CVERecord?id=CVE-2023-52703 Référence CVE CVE-2023-52781 https://www.cve.org/CVERecord?id=CVE-2023-52781 Référence CVE CVE-2023-52813 https://www.cve.org/CVERecord?id=CVE-2023-52813 Référence CVE CVE-2023-52835 https://www.cve.org/CVERecord?id=CVE-2023-52835 Référence CVE CVE-2023-52877 https://www.cve.org/CVERecord?id=CVE-2023-52877 Référence CVE CVE-2023-52878 https://www.cve.org/CVERecord?id=CVE-2023-52878 Référence CVE CVE-2023-52881 https://www.cve.org/CVERecord?id=CVE-2023-52881 Référence CVE CVE-2024-0193 https://www.cve.org/CVERecord?id=CVE-2024-0193 Référence CVE CVE-2024-26583 https://www.cve.org/CVERecord?id=CVE-2024-26583 Référence CVE CVE-2024-26584 https://www.cve.org/CVERecord?id=CVE-2024-26584 Référence CVE CVE-2024-26585 https://www.cve.org/CVERecord?id=CVE-2024-26585 Référence CVE CVE-2024-26598 https://www.cve.org/CVERecord?id=CVE-2024-26598 Référence CVE CVE-2024-26656 https://www.cve.org/CVERecord?id=CVE-2024-26656 Référence CVE CVE-2024-26673 https://www.cve.org/CVERecord?id=CVE-2024-26673 Référence CVE CVE-2024-26675 https://www.cve.org/CVERecord?id=CVE-2024-26675 Référence CVE CVE-2024-26735 https://www.cve.org/CVERecord?id=C

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0365Multiples 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, une élévation de privilèges et une atteinte à la confidentialité des données.

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

org/CVERecord?id=CVE-2023-52605 Référence CVE CVE-2023-52606 https://www.cve.org/CVERecord?id=CVE-2023-52606 Référence CVE CVE-2023-52607 https://www.cve.org/CVERecord?id=CVE-2023-52607 Référence CVE CVE-2023-5633 https://www.cve.org/CVERecord?id=CVE-2023-5633 Référence CVE CVE-2023-6121 https://www.cve.org/CVERecord?id=CVE-2023-6121 Référence CVE CVE-2023-6610 https://www.cve.org/CVERecord?id=CVE-2023-6610 Référence CVE CVE-2023-6817 https://www.cve.org/CVERecord?id=CVE-2023-6817 Référence CVE CVE-2023-6932 https://www.cve.org/CVERecord?id=CVE-2023-6932 Référence CVE CVE-2023-7192 https://www.cve.org/CVERecord?id=CVE-2023-7192 Référence CVE CVE-2024-0193 https://www.cve.org/CVERecord?id=CVE-2024-0193 Référence CVE CVE-2024-0340 https://www.cve.org/CVERecord?id=CVE-2024-0340 Référence CVE CVE-2024-0607 https://www.cve.org/CVERecord?id=CVE-2024-0607 Référence CVE CVE-2024-0646 https://www.cve.org/CVERecord?id=CVE-2024-0646 Référence CVE CVE-2024-1085 https://www.cve.org/CVERecord?id=CVE-2024-1085 Référence CVE CVE-2024-1086 https://www.cve.org/CVERecord?id=CVE-2024-1086 Référence CVE CVE-2024-23849 https://www.cve.org/CVERecord?id=CVE-2024-23849 Référence CVE CVE-2024-24860 https://www.cve.org/CVERecord?id=CVE-2024-24860 Référence CVE CVE-2024-26581 https://www.cve.org/CVERecord?id=CVE-2024-26

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0177Multiples vulnérabilités dans le noyau Linux de RedHat

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

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0143Multiples vulnérabilités dans le noyau Linux Ubuntu

.cve.org/CVERecord?id=CVE-2023-6040 Référence CVE CVE-2023-6121 https://www.cve.org/CVERecord?id=CVE-2023-6121 Référence CVE CVE-2023-6176 https://www.cve.org/CVERecord?id=CVE-2023-6176 Référence CVE CVE-2023-6531 https://www.cve.org/CVERecord?id=CVE-2023-6531 Référence CVE CVE-2023-6606 https://www.cve.org/CVERecord?id=CVE-2023-6606 Référence CVE CVE-2023-6622 https://www.cve.org/CVERecord?id=CVE-2023-6622 Référence CVE CVE-2023-6817 https://www.cve.org/CVERecord?id=CVE-2023-6817 Référence CVE CVE-2023-6931 https://www.cve.org/CVERecord?id=CVE-2023-6931 Référence CVE CVE-2023-6932 https://www.cve.org/CVERecord?id=CVE-2023-6932 Référence CVE CVE-2024-0193 https://www.cve.org/CVERecord?id=CVE-2024-0193 Référence CVE CVE-2024-0565 https://www.cve.org/CVERecord?id=CVE-2024-0565 Référence CVE CVE-2024-0607 https://www.cve.org/CVERecord?id=CVE-2024-0607 Référence CVE CVE-2024-0641 https://www.cve.org/CVERecord?id=CVE-2024-0641 Référence CVE CVE-2024-0646 https://www.cve.org/CVERecord?id=CVE-2024-0646 Référence CVE CVE-2024-22705 https://www.cve.org/CVERecord?id=CVE-2024-22705 Gestion détaillée du document le 16 février 2024 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr fran

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0091Multiples 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, une atteinte à la confidentialité des données et un déni de service.

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0073Multiples 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, une atteinte à la confidentialité des données et un déni de service.

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
See the vendor and CVE records for the affected range.
Fixed
0:5.14.0-362.24.1.el9_3 < *; 0:5.14.0-70.105.1.el9_0 < *; 0:5.14.0-70.105.1.rt21.177.el9_0 < *; 0:5.14.0-284.55.1.el9_2 < *; 0:5.14.0-284.55.1.rt14.340.el9_2 < *; v5.8.6-22 < *
Action
Review the linked authoritative reference and apply the recorded fixed release appropriate to the affected product branch.
Workaround
A mitigation or workaround reference is available from the source linked below; validate it against the affected product and version.
04

Evidence and provenance

Published 2 Jan 2024 · Last source change 4 Mar 2026, 06:58 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-2024-15992
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD enriched

Missing structured fields: affected product, affected versions. Missing data is not evidence of low risk; review the primary advisory.

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
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2024-15992↗Vendor CSAF · Siemens ProductCERT↗CISA Vulnrichment SSVC evidence↗CVE authority or vendor reference↗Vendor advisory↗Vendor advisory↗Vendor advisory↗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.
Free version - for non-commercial use only.CVE-2024-0193 · cve.blacktree.nl