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CVE Record

CVE-2025-38634: power: supply: cpcap-charger: Fix null check for power_supply_get_by_name

In the Linux kernel, the following vulnerability has been resolved: power: supply: cpcap-charger: Fix null check for power_supply_get_by_name In the cpcap_usb_detect() function, the power_supply_get_by_name() function may return `NULL` instead of an error pointer. To prevent potential null pointer dereferences, Added a null check.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysisunknown

Security readout for executives and security teams

Plain-English summary

CVE-2025-38634 is a Linux kernel reliability flaw in the CPCAP charger driver. A missing NULL check could cause a kernel null pointer dereference when power-supply lookup fails. The public record does not provide CVSS, exploitation evidence, or broad business-impact detail.

Executive priority

Treat this as routine kernel maintenance unless asset inventory shows affected embedded or mobile-class Linux hardware using this charger driver. There is no cited evidence of exploitation, but kernel faults can still disrupt availability on exposed systems.

Technical view

The issue is in cpcap_usb_detect() within the Linux cpcap-charger power-supply driver. power_supply_get_by_name() may return NULL, but the code did not handle that case. Stable kernel commits add the missing NULL check to prevent potential null pointer dereference.

Likely exposure

Exposure appears limited to Linux kernels carrying the vulnerable cpcap-charger code and systems where that driver path is present or used. The source record lists affected Linux kernel versions including 5.14, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, and 6.17.

Exploitation context

The provided sources do not show active exploitation, public exploit availability, or KEV listing. Based on the description, the issue is a kernel null pointer dereference risk, likely causing local reliability or denial-of-service impact if the affected path is reachable.

Researcher notes

Evidence is thin: no CVSS, CWE, exploit detail, or complete product matrix is provided. The strongest facts are the kernel description, stable commit references, affected Linux version entries, and Debian LTS advisory reference. Avoid extrapolating impact beyond null pointer dereference prevention.

Mitigation direction

  • Apply Linux kernel or distribution updates containing the referenced stable fixes.
  • Review Debian LTS guidance if using affected Debian kernel packages.
  • Prioritize supported kernel streams that receive stable security backports.
  • Check vendor guidance before using non-vendor kernel patches in production.

Validation and detection

  • Inventory running Linux kernel versions across affected assets.
  • Check whether cpcap-charger is built, loaded, or relevant to deployed hardware.
  • Confirm installed kernel packages reference CVE-2025-38634 or the stable fix commits.
  • Verify systems were rebooted into the updated kernel after patching.
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.

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CVE-2025-38634 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
1ADP 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.

ADP provider summaries

CVECVE Program Container

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
LinuxLinuxeab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3c, eab4e6d953c1059a30ac0f15826abc7dd2374d3cunaffected
LinuxLinux5.14, 0, 5.15.190, 6.1.148, 6.6.102, 6.12.42, 6.15.10, 6.16.1, 6.17affected
Weakness

CWE details

No CWE listed

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