Linux Kernel: security vulnerability (CVE-2024-26920)
Published Last modified Sources: Siemens ProductCERT, SUSE, Red Hat, BSI, EUVD, CVE.org
What is affected, what to do
In the Linux kernel, the following vulnerability has been resolved: tracing/trigger: Fix to return error if failed to alloc snapshot Fix register_snapshot_trigger() to return error code if it failed to allocate a snapshot instead of 0 (success). Unless that, it will register snapshot trigger without an error.
The available sources name no fixed version. Check the vendor guidance in the references below.
Conflicting version data — version display is hidden until the data is resolved.
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Metrics
5.5
XIEM Effective CVSS
Highest available CVSS rating from NVD and vendor data.
Source: NVD, CVSS v3
5.5
CVSS v3
Severity Medium on the scale from 0 to 10.
Source: Siemens ProductCERT, SUSE, Red Hat, BSI, EUVD, CVE.org
0.3 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 17.3
Show all metrics
- Severity
- Medium
Priority (0–325)
The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?
Read in glossary- 34.75 Methodology
Exploit maturity
An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.
Read in glossary- no public PoC known
XIEM Effective CVSS
XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.
Read in glossary- 5.5 Methodology
CVSS v3
CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.
Read in glossary- 5.5
EPSS score
The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.
Read in glossary- 0.3 %
- Low — model estimates < 1% exploitation likelihood.
EPSS percentile
The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.
Read in glossary- 17.3
- Elevated — this CVE ranks above at least 10% of all CVEs scored today.
KEV status
The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.
Read in glossary- —
- Published
- CISA assessment (SSVC)
- Exploitation: none known · not automatable · Technical impact: partial
- Source: CISA Vulnrichment, as of 28 May 2024
Detection rules
No NEOSEC detection rule is available for this vulnerability yet.
Classification under NIS2 and CRA
Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.
NIS2
NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.
Read in glossary- Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
CRA
The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.
Read in glossary- From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
ISO/IEC 27001
ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.
Read in glossary- Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.
Description
In the Linux kernel, the following vulnerability has been resolved: tracing/trigger: Fix to return error if failed to alloc snapshot Fix register_snapshot_trigger() to return error code if it failed to allocate a snapshot instead of 0 (success). Unless that, it will register snapshot trigger without an error.
Source: siemens_advisory, suse_csaf, redhat_csaf, BSI CSAF, BSI WID Portal, ENISA EUVD, NVD (NIST), cvelistv5
Affected products
The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.
| Affected versions | Fixed in | ||
|---|---|---|---|
| Linux | Linux |
|
|
Vendors and products
Affected operating systems
| Linux | linux | linux_kernel | 5.7 |
| Linux | linux | linux_kernel | 6.8 |
| Linux | linux | linux_kernel | — |
References & sources
- git.kernel.orgstable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398euvd
- git.kernel.orgstable/c/6022c065c9ec465d84cebff8f480db083e4ee06beuvd
- git.kernel.orgstable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6beuvd
- git.kernel.orgstable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08euvd
- git.kernel.orgstable/c/bcf4a115a5068f3331fafb8c176c1af0da3d8b19x_transferred
- git.kernel.orgstable/c/34925d01baf3ee62ab21c21efd9e2c44c24c004ax_transferred
- git.kernel.orgstable/c/8ffd5590f4d6ef5460acbeac7fbdff7025f9b419x_transferred
- git.kernel.orgstable/c/2450a69d2ee75d1f0112d509ac82ef98f5ad6b5fx_transferred
- git.kernel.orgstable/c/56cfbe60710772916a5ba092c99542332b48e870x_transferred
- git.kernel.orgstable/c/26ebeffff238488466fa578be3b35b8a46e69906x_transferred
- git.kernel.orgstable/c/b5085b5ac1d96ea2a8a6240f869655176ce44197x_transferred
- git.kernel.orgstable/c/2a3073d58382157ab396734ed4e421ba9e969db1x_transferred
- Siemens ProductCERTproductcert/html/ssa-265688.html
Changes to this CVE
Who changed this CVE and when: NVD (analysis, affected products, CVSS), the CVE publisher (CNA) and additional providers such as CISA (ADP).
Record modifiedLinux
New references:Show 12 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08Reference added —https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398Reference added —https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6bReference added —https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06bReference removed https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08—Reference removed https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398—Reference removed https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6b—Reference removed https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06b—Reference type removed https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08 Types: Patch—Reference type removed https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398 Types: Patch—Reference type removed https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6b Types: Patch—Reference type removed https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06b Types: Patch—Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Record modifiedCVE Program
New references:- https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08
- https://git.kernel.org/stable/c/2450a69d2ee75d1f0112d509ac82ef98f5ad6b5f
- https://git.kernel.org/stable/c/26ebeffff238488466fa578be3b35b8a46e69906
- https://git.kernel.org/stable/c/2a3073d58382157ab396734ed4e421ba9e969db1
and 8 more references
Show 36 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08Reference added —https://git.kernel.org/stable/c/2450a69d2ee75d1f0112d509ac82ef98f5ad6b5fReference added —https://git.kernel.org/stable/c/26ebeffff238488466fa578be3b35b8a46e69906Reference added —https://git.kernel.org/stable/c/2a3073d58382157ab396734ed4e421ba9e969db1Reference added —https://git.kernel.org/stable/c/34925d01baf3ee62ab21c21efd9e2c44c24c004aReference added —https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398Reference added —https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6bReference added —https://git.kernel.org/stable/c/56cfbe60710772916a5ba092c99542332b48e870Reference added —https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06bReference added —https://git.kernel.org/stable/c/8ffd5590f4d6ef5460acbeac7fbdff7025f9b419Reference added —https://git.kernel.org/stable/c/b5085b5ac1d96ea2a8a6240f869655176ce44197Reference added —https://git.kernel.org/stable/c/bcf4a115a5068f3331fafb8c176c1af0da3d8b19Reference removed https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08—Reference removed https://git.kernel.org/stable/c/2450a69d2ee75d1f0112d509ac82ef98f5ad6b5f—Reference removed https://git.kernel.org/stable/c/26ebeffff238488466fa578be3b35b8a46e69906—Reference removed https://git.kernel.org/stable/c/2a3073d58382157ab396734ed4e421ba9e969db1—Reference removed https://git.kernel.org/stable/c/34925d01baf3ee62ab21c21efd9e2c44c24c004a—Reference removed https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398—Reference removed https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6b—Reference removed https://git.kernel.org/stable/c/56cfbe60710772916a5ba092c99542332b48e870—Reference removed https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06b—Reference removed https://git.kernel.org/stable/c/8ffd5590f4d6ef5460acbeac7fbdff7025f9b419—Reference removed https://git.kernel.org/stable/c/b5085b5ac1d96ea2a8a6240f869655176ce44197—Reference removed https://git.kernel.org/stable/c/bcf4a115a5068f3331fafb8c176c1af0da3d8b19—Reference type removed https://git.kernel.org/stable/c/0958b33ef5a04ed91f61cef4760ac412080c4e08 Types: Patch—Reference type removed https://git.kernel.org/stable/c/2450a69d2ee75d1f0112d509ac82ef98f5ad6b5f Types: Patch—Reference type removed https://git.kernel.org/stable/c/26ebeffff238488466fa578be3b35b8a46e69906 Types: Patch—Reference type removed https://git.kernel.org/stable/c/2a3073d58382157ab396734ed4e421ba9e969db1 Types: Patch—Reference type removed https://git.kernel.org/stable/c/34925d01baf3ee62ab21c21efd9e2c44c24c004a Types: Patch—Reference type removed https://git.kernel.org/stable/c/36be97e9eb535fe3008a5cb040b1e56f29f2e398 Types: Patch—Reference type removed https://git.kernel.org/stable/c/4b001ef14baab16b553a002cb9979e31b8fc0c6b Types: Patch—Reference type removed https://git.kernel.org/stable/c/56cfbe60710772916a5ba092c99542332b48e870 Types: Patch—Reference type removed https://git.kernel.org/stable/c/6022c065c9ec465d84cebff8f480db083e4ee06b Types: Patch—Reference type removed https://git.kernel.org/stable/c/8ffd5590f4d6ef5460acbeac7fbdff7025f9b419 Types: Patch—Reference type removed https://git.kernel.org/stable/c/b5085b5ac1d96ea2a8a6240f869655176ce44197 Types: Patch—Reference type removed https://git.kernel.org/stable/c/bcf4a115a5068f3331fafb8c176c1af0da3d8b19 Types: Patch—Source identifier: af854a3a-2127-422b-91ae-364da2661108
Record modifiedSiemens ADP
Show 3 original changes
Individual changes of this event as published by NVD Type Action Before After Affected versions (publisher) added —Affected value modified. <a href="https://github.com/CVEProject/cvelistV5/blob/main/cves/2024/26xxx/CVE-2024-26920.json">CVE-2024-26920</a>Reference added —https://cert-portal.siemens.com/productcert/html/ssa-265688.htmlReference removed https://cert-portal.siemens.com/productcert/html/ssa-265688.html—Source identifier: 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
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<a href="https://intel.neosec.eu/en/cve/CVE-2024-26920"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-26920.svg?lang=en" alt="CVE-2024-26920 – NEOSEC Intel" height="20"></a>