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CVE Record

CVE-2024-50131: tracing: Consider the NULL character when validating the event length

In the Linux kernel, the following vulnerability has been resolved: tracing: Consider the NULL character when validating the event length strlen() returns a string length excluding the null byte. If the string length equals to the maximum buffer length, the buffer will have no space for the NULL terminating character. This commit checks this condition and returns failure for it.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This is a Linux kernel tracing bug where an event name or string at the maximum allowed length could be accepted without room for its terminating NULL byte. The public bundle shows a kernel fix, Debian LTS notices, and a Siemens advisory, but no CVSS score or confirmed active exploitation.

Executive priority

Handle through normal kernel vulnerability management unless internal exposure analysis identifies sensitive Linux systems without vendor patch paths. There is insufficient evidence for emergency action, but kernel flaws can persist in appliances and long-lived infrastructure.

Technical view

The flaw is in Linux kernel tracing event length validation. strlen() excludes the NULL terminator, so a string equal to the maximum buffer length could leave no space for termination. The resolved change rejects that boundary condition. The bundle does not describe impact beyond the validation defect.

Likely exposure

Exposure is likely limited to Linux systems running affected kernel ranges or downstream products incorporating those kernels. Debian LTS and Siemens references indicate distribution and vendor tracking, but the bundle does not identify all affected packages, appliances, or configurations.

Exploitation context

The CVE is not in KEV, and the provided sources do not claim active exploitation or public weaponization. Treat exploitation status as unconfirmed. The available evidence supports a coding flaw fixed through Linux stable commits, not a proven field attack.

Researcher notes

The core issue is a boundary check error around NULL termination in tracing event validation. The bundle lacks CVSS, CWE, detailed impact, and exploitability analysis. Researchers should avoid overstating impact and verify affectedness through kernel source lineage or vendor backports.

Mitigation direction

  • Upgrade to a vendor-supported kernel containing the referenced stable tracing fix.
  • Follow Debian LTS advisories for Debian-hosted systems.
  • Follow Siemens guidance for affected Siemens-managed products.
  • Ask vendors to confirm whether embedded Linux firmware includes the fix.
  • Avoid relying on unverified third-party workarounds.

Validation and detection

  • Inventory Linux kernel versions across servers, containers hosts, appliances, and embedded systems.
  • Compare deployed kernels against vendor advisories and the listed Linux stable commits.
  • Confirm patched hosts report vendor kernel builds containing the tracing fix.
  • Check Debian and Siemens advisories where those ecosystems are present.
  • Document any unsupported kernels requiring replacement or vendor escalation.
Prepared
Confidence
medium
Sources
12

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2024-50131 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
3Timeline events
2ADP providers
11Source links

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. CVE publishedCVE Program

    The CVE record was published.

  3. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CVECVE Program Container
siemens-SADPADP container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxdec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4, dec65d79fd269d05427c8167090bfc9c3d0b56c4unaffected
LinuxLinux5.1, 0, 5.4.285, 5.10.229, 5.15.170, 6.1.115, 6.6.59, 6.11.6, 6.12affected
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.