Linux Kernel: Classic Buffer Overflow (CVE-2024-26889)
Published Last modified Sources: Siemens ProductCERT, SUSE, Debian, Red Hat, BSI, CVE.org, EUVD
What is affected, what to do
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_core: Fix possible buffer overflow struct hci_dev_info has a fixed size name[8] field so in the event that hdev->name is bigger than that strcpy would attempt to write past its size, so this fixes this problem by switching to use strscpy.
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.
Not sure whether and how you are affected? Ask a question about this vulnerability
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, Debian, Red Hat, BSI, CVE.org, EUVD
0.3 %
EPSS score
Low — model estimates < 1% exploitation likelihood.
Source: FIRST EPSS, percentile 20.9
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- 35.85 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- 20.9
- 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 11 February 2025
CWE
CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.
Read in glossary- CWE-120
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: Bluetooth: hci_core: Fix possible buffer overflow struct hci_dev_info has a fixed size name[8] field so in the event that hdev->name is bigger than that strcpy would attempt to write past its size, so this fixes this problem by switching to use strscpy.
Source: siemens_advisory, suse_csaf, Debian Security Advisories, redhat_csaf, BSI CSAF, BSI WID Portal, cvelistv5, ENISA EUVD, NVD (NIST)
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 | debian | debian_linux | 10.0 |
| Linux | debian | linux | bullseye |
| Linux | linux | linux_kernel | — |
Weakness classes (CWE)
CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Base
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Entry at MITRE CWE-120
References & sources
- git.kernel.orgstable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8aceuvd, Patch
- git.kernel.orgstable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3deuvd, Patch
- git.kernel.orgstable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfceuvd, Patch
- git.kernel.orgstable/c/2e845867b4e279eff0a19ade253390470e07e8a1euvd, Patch
- git.kernel.orgstable/c/a41c8efe659caed0e21422876bbb6b73c15b5244euvd, Patch
- git.kernel.orgstable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10euvd, Patch
- git.kernel.orgstable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2euvd, Patch
- git.kernel.orgstable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4euvd, Patch
- git.kernel.orgstable/c/68644bf5ec6baaff40fc39b3529c874bfda709bdx_transferred, Patch
- lists.debian.orgdebian-lts-announce/2024/06/msg00017.htmlx_transferred, Mailing list, Third-party advisory
- lists.debian.orgdebian-lts-announce/2024/06/msg00020.htmlx_transferred, Mailing list, Third-party advisory
- Siemens ProductCERTproductcert/html/ssa-265688.html
- git.kernel.orgstable/c/0477ac14251d0ba813f311bb5db79eb07d99bfcceuvd
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
Show 2 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-2024-26889.json">CVE-2024-26889</a>Reference added —https://git.kernel.org/stable/c/0477ac14251d0ba813f311bb5db79eb07d99bfccSource identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Record modifiedLinux
New references:- https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1
- https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2
- https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d
- https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac
and 4 more references
Show 24 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1Reference added —https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2Reference added —https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3dReference added —https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8acReference added —https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4Reference added —https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10Reference added —https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244Reference added —https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfcReference removed https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1—Reference removed https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2—Reference removed https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d—Reference removed https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac—Reference removed https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4—Reference removed https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10—Reference removed https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244—Reference removed https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfc—Reference type removed https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1 Types: Patch—Reference type removed https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2 Types: Patch—Reference type removed https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d Types: Patch—Reference type removed https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac Types: Patch—Reference type removed https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4 Types: Patch—Reference type removed https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244 Types: Patch—Reference type removed https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfc Types: Patch—Source identifier: 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Record modifiedCVE Program
New references:- https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1
- https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2
- https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d
- https://git.kernel.org/stable/c/68644bf5ec6baaff40fc39b3529c874bfda709bd
and 7 more references
Show 33 original changes
Individual changes of this event as published by NVD Type Action Before After Reference added —https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1Reference added —https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2Reference added —https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3dReference added —https://git.kernel.org/stable/c/68644bf5ec6baaff40fc39b3529c874bfda709bdReference added —https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8acReference added —https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4Reference added —https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10Reference added —https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244Reference added —https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfcReference added —https://lists.debian.org/debian-lts-announce/2024/06/msg00017.htmlReference added —https://lists.debian.org/debian-lts-announce/2024/06/msg00020.htmlReference removed https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1—Reference removed https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2—Reference removed https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d—Reference removed https://git.kernel.org/stable/c/68644bf5ec6baaff40fc39b3529c874bfda709bd—Reference removed https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac—Reference removed https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4—Reference removed https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10—Reference removed https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244—Reference removed https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfc—Reference removed https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html—Reference removed https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html—Reference type removed https://git.kernel.org/stable/c/2e845867b4e279eff0a19ade253390470e07e8a1 Types: Patch—Reference type removed https://git.kernel.org/stable/c/2edce8e9a99dd5e4404259d52e754fdc97fb42c2 Types: Patch—Reference type removed https://git.kernel.org/stable/c/54a03e4ac1a41edf8a5087bd59f8241b0de96d3d Types: Patch—Reference type removed https://git.kernel.org/stable/c/68644bf5ec6baaff40fc39b3529c874bfda709bd Types: Patch—Reference type removed https://git.kernel.org/stable/c/6d5a9d4a7bcbb7534ce45a18a52e7bd23e69d8ac Types: Patch—Reference type removed https://git.kernel.org/stable/c/81137162bfaa7278785b24c1fd2e9e74f082e8e4 Types: Patch—Reference type removed https://git.kernel.org/stable/c/8c28598a2c29201d2ba7fc37539a7d41c264fb10 Types: Patch—Reference type removed https://git.kernel.org/stable/c/a41c8efe659caed0e21422876bbb6b73c15b5244 Types: Patch—Reference type removed https://git.kernel.org/stable/c/d47e6c1932cee02954ea588c9f09fd5ecefeadfc Types: Patch—Reference type removed https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html Types: Mailing List, Third Party Advisory—Reference type removed https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html Types: Mailing List, Third Party Advisory—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-2024-26889.json">CVE-2024-26889</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-2024-26889"><img src="https://intel.neosec.eu/badge/cve/CVE-2024-26889.svg?lang=en" alt="CVE-2024-26889 – NEOSEC Intel" height="20"></a>