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CVE Record

CVE-2023-54015: net/mlx5: Devcom, fix error flow in mlx5_devcom_register_device

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Devcom, fix error flow in mlx5_devcom_register_device In case devcom allocation is failed, mlx5 is always freeing the priv. However, this priv might have been allocated by a different thread, and freeing it might lead to use-after-free bugs. Fix it by freeing the priv only in case it was allocated by the running thread.

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 bug in mlx5 networking driver error handling. During a failed devcom allocation, one thread could free shared private data that another thread allocated, creating a use-after-free condition. The public record does not provide CVSS, impact scope, or confirmed exploitation.

Executive priority

Handle as a targeted kernel maintenance issue, not an emergency based on current evidence. Prioritize internet-facing, production, or high-availability Linux systems that use mlx5 networking, while monitoring vendors for impact details.

Technical view

The fix changes mlx5_devcom_register_device so it frees priv only when the current execution path allocated it. The described flaw is an error-flow race around devcom allocation failure, where unconditional free of shared priv could cause use-after-free behavior.

Likely exposure

Exposure appears limited to Linux systems running affected kernel versions and exercising the net/mlx5 devcom registration path. The bundle lists affected Linux kernel version ranges, but does not identify distributions, configurations, hardware prerequisites, or reachable attack paths.

Exploitation context

The bundle marks KEV as false and provides no cited evidence of active exploitation, public exploit availability, or attacker prerequisites. Treat exploitation status as unconfirmed based on the provided sources.

Researcher notes

Evidence is limited to the CVE description and Linux stable commit references. No CWE, CVSS, distribution mapping, exploitability assessment, or trigger details are provided. Avoid assuming remote exploitability without additional vendor or researcher analysis.

Mitigation direction

  • Update to a Linux kernel build containing the referenced stable fixes.
  • Check your Linux distribution advisories for backported mlx5 fixes.
  • Prioritize systems using affected Linux kernels and mlx5 networking functionality.
  • If immediate patching is unavailable, follow vendor guidance for risk reduction.

Validation and detection

  • Inventory kernel versions across Linux hosts.
  • Identify systems using the mlx5 driver or related networking hardware paths.
  • Compare installed kernels against vendor advisories and stable fix inclusion.
  • Confirm patched systems boot the expected fixed kernel version.
Prepared
Confidence
medium
Sources
8

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-2023-54015 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
7Source 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
LinuxLinuxfadd59fc50d010145f251db583c7ccef37393d19, fadd59fc50d010145f251db583c7ccef37393d19, fadd59fc50d010145f251db583c7ccef37393d19, fadd59fc50d010145f251db583c7ccef37393d19, fadd59fc50d010145f251db583c7ccef37393d19, fadd59fc50d010145f251db583c7ccef37393d19unaffected
LinuxLinux5.0, 0, 5.4.244, 5.10.181, 5.15.114, 6.1.31, 6.3.5, 6.4affected
Weakness

CWE details

No CWE listed

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