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CVE Record

CVE-2026-23015: gpio: mpsse: fix reference leak in gpio_mpsse_probe() error paths

In the Linux kernel, the following vulnerability has been resolved: gpio: mpsse: fix reference leak in gpio_mpsse_probe() error paths The reference obtained by calling usb_get_dev() is not released in the gpio_mpsse_probe() error paths. Fix that by using device managed helper functions. Also remove the usb_put_dev() call in the disconnect function since now it will be released automatically.

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 is a USB device reference leak in error handling for the GPIO MPSSE driver. If probe setup fails, a reference may not be released. The public record does not provide CVSS, confirmed impact, or exploitation evidence, so business urgency depends on whether affected kernels and this driver are present.

Executive priority

Treat as a targeted kernel maintenance item, not an emergency, unless affected systems use USB GPIO/MPSSE devices in sensitive or high-availability environments. Patch through normal kernel update processes after vendor confirmation.

Technical view

The flaw is in gpio_mpsse_probe() error paths. A reference acquired with usb_get_dev() was not released when probe failed. The fix switches to device-managed helpers and removes the disconnect-time usb_put_dev() because lifecycle cleanup becomes automatic.

Likely exposure

Exposure appears limited to Linux systems running affected kernel builds with the gpio-mpsse USB GPIO driver available or used. The source bundle lists Linux kernel versions including 6.13 and 6.19, with 6.18.6 referenced, but exact downstream package ranges require vendor confirmation.

Exploitation context

No active exploitation is stated in the provided sources, and the CVE is not marked KEV. The bundle does not describe remote attack paths, privilege requirements, denial-of-service impact, or practical exploitability.

Researcher notes

Evidence supports a reference leak on probe failure, but not a proven security impact beyond resource lifecycle mishandling. The record lacks CWE, CVSS, exploitability details, and downstream affected package mapping.

Mitigation direction

  • Check your Linux vendor advisory for CVE-2026-23015 package status.
  • Update to a kernel build containing the referenced stable fixes.
  • Prioritize systems using USB MPSSE GPIO hardware or the gpio-mpsse driver.
  • Limit untrusted physical USB device access where this driver may load.
  • Track downstream backports if pinned to vendor long-term kernels.

Validation and detection

  • Inventory Linux kernel versions across servers, appliances, and embedded systems.
  • Confirm whether the gpio-mpsse driver is built, loaded, or packaged.
  • Review vendor changelogs for CVE-2026-23015 or the referenced stable commits.
  • Verify updated source packages include device-managed cleanup in gpio_mpsse_probe().
  • Document systems where USB GPIO/MPSSE hardware is present.
Prepared
Confidence
medium
Sources
4

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

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CVE-2026-23015 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
3Source 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
LinuxLinuxc46a74ff05c0ac76ba11ef21c930c3b447abf31a, c46a74ff05c0ac76ba11ef21c930c3b447abf31aunaffected
LinuxLinux6.13, 0, 6.18.6, 6.19affected
Weakness

CWE details

No CWE listed

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