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CVE Record

CVE-2025-40029: bus: fsl-mc: Check return value of platform_get_resource()

In the Linux kernel, the following vulnerability has been resolved: bus: fsl-mc: Check return value of platform_get_resource() platform_get_resource() returns NULL in case of failure, so check its return value and propagate the error in order to prevent NULL pointer dereference.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

This Linux kernel issue can cause a NULL pointer dereference in the fsl-mc bus driver when a required platform resource lookup fails. In business terms, the known impact is most consistent with system instability or denial of service on exposed Linux systems, not confirmed data theft or remote compromise.

Executive priority

Treat this as a targeted kernel maintenance item, not an emergency, unless your fleet uses the fsl-mc driver path. Prioritize confirmation and patch planning for relevant Linux systems because kernel availability issues can affect critical services.

Technical view

The flaw is in Linux bus/fsl-mc handling: platform_get_resource() can return NULL, but the driver did not check that result before use. The stable fixes add return-value validation and error propagation to prevent the NULL pointer dereference. No CVSS, CWE, or detailed attack vector is provided in the source bundle.

Likely exposure

Exposure likely applies to Linux kernels that include and exercise the fsl-mc bus driver. The source lists Linux as affected across multiple kernel versions and provides stable kernel fix commits, but does not identify distribution packages, hardware models, or default exploitability conditions.

Exploitation context

The source bundle does not report active exploitation, public exploit code, or KEV listing. Because the issue is a kernel NULL pointer dereference, practical concern is availability impact if the vulnerable path can be reached in a given deployment.

Researcher notes

Evidence is limited to the CVE record and Linux stable commit references. The fix pattern is defensive error handling around platform_get_resource(). The bundle does not provide reachability details, privilege requirements, affected distributions, or a CVSS score, so exposure assessment depends on kernel configuration and hardware use.

Mitigation direction

  • Apply the relevant Linux stable kernel or distribution update when available.
  • Confirm your vendor kernel includes the referenced stable fix commit.
  • Prioritize systems that use the fsl-mc bus driver or related hardware path.
  • Monitor Linux vendor advisories for package-specific fixed versions.
  • Avoid assuming non-Linux or unrelated kernel components are affected.

Validation and detection

  • Inventory Linux kernel versions across affected environments.
  • Check whether the fsl-mc bus driver is built, loaded, or used.
  • Compare kernel source or changelog against the referenced stable commits.
  • Review vendor advisories for your distribution-specific fixed package.
  • Check kernel logs for crashes consistent with NULL pointer dereference.
Prepared
Confidence
medium
Sources
9

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-2025-40029 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
8Source 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
LinuxLinux6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fd, 6305166c8771c33a8d5992fb53f93cfecedc14fdunaffected
LinuxLinux5.9, 0, 5.10.246, 5.15.195, 6.1.156, 6.6.112, 6.12.53, 6.17.3, 6.18affected
Weakness

CWE details

No CWE listed

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