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CVE Record

CVE-2023-54312: samples/bpf: Fix buffer overflow in tcp_basertt

In the Linux kernel, the following vulnerability has been resolved: samples/bpf: Fix buffer overflow in tcp_basertt Using sizeof(nv) or strlen(nv)+1 is correct.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysislow

Security readout for executives and security teams

Plain-English summary

This CVE covers a buffer overflow fixed in the Linux kernel samples/bpf tcp_basertt sample. The provided sources do not show active exploitation, CVSS severity, or broad production impact. Business urgency is mainly patch hygiene: confirm whether affected kernel source or packages include this sample and apply vendor-provided stable updates.

Executive priority

Handle through normal Linux patch management unless local evidence shows the affected BPF sample is built or used. Escalate only if a vendor advisory adds severity, exploitability, or production exposure details.

Technical view

The issue is described as a buffer overflow in samples/bpf tcp_basertt, corrected by using sizeof(nv) or strlen(nv)+1. The record lists multiple affected Linux kernel versions and stable kernel commits. The source bundle does not provide exploitability details, attack prerequisites, impact scope, CWE, or CVSS metrics.

Likely exposure

Exposure is most plausible where affected Linux kernel source packages or built sample BPF tooling include tcp_basertt. The evidence does not support treating every Linux runtime host as directly exploitable without confirming the sample exists, is built, or is used.

Exploitation context

The source bundle reports KEV false and provides no cited evidence of active exploitation or public weaponization. It also does not describe remote attack paths, privilege requirements, or practical exploit conditions.

Researcher notes

The record is sparse: no CVSS, CWE, exploitability analysis, or operational prerequisites are provided. Analysis should stay tied to samples/bpf tcp_basertt and the listed stable commits, not generalized to unrelated Linux kernel networking paths.

Mitigation direction

  • Apply Linux vendor or stable-kernel updates containing the referenced fixes.
  • Check distribution advisories before assigning urgency beyond patch hygiene.
  • Avoid building or deploying affected samples/bpf tcp_basertt artifacts unless needed.
  • Track remediation by kernel package version and referenced stable commits.

Validation and detection

  • Inventory Linux kernel versions against the affected version list.
  • Check kernel source or package changelog for the referenced fix commits.
  • Confirm whether samples/bpf tcp_basertt is present, built, or deployed.
  • Verify scanners are not over-broadly flagging unrelated Linux hosts.
Prepared
Confidence
medium
Sources
10

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-2023-54312 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
0ADP providers
9Source 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.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxc890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6, c890063e440456e75c2e70f6bcec3797f1771eb6unaffected
LinuxLinux4.15, 0, 4.19.291, 5.4.251, 5.10.188, 5.15.121, 6.1.39, 6.3.13, 6.4.4, 6.5affected
Weakness

CWE details

No CWE listed

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