CVE-2026-31615

Kernel crash via unchecked USB endpoint index

Published Apr 24, 2026 · Updated Apr 24, 2026

NULL pointer dereference in the Linux kernel Renesas USB3 gadget driver allows local users to crash the kernel via a crafted USB request. The GET_STATUS and SET/CLEAR_FEATURE handlers use the endpoint number from host-controlled wIndex to index the endpoint array without checking it against the controller endpoint count. The system must use the Renesas USB3 gadget controller and process the crafted standard request; the demonstrated consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in the Linux kernel Renesas USB3 gadget driver allows local users to crash the kernel via a crafted USB request. The GET_STATUS and SET/CLEAR_FEATURE handlers use the endpoint number from host-controlled wIndex to index the endpoint array without checking it against the controller endpoint count. The system must use the Renesas USB3 gadget controller and process the crafted standard request; the demonstrated consequence is a kernel crash.

The record

CVE
CVE-2026-31615
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <37f430b2240655e6b0199a92aa1057e4d621be51
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44216e3dd4455b798899b50eedb0ec3831dff8e0
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <adb8014599fdf0818d3d93f1f74e06cd0bdec08d
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e3d42598f2995cdc07b7779874e7c5f8a1b773db

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <37f430b2240655e6b0199a92aa1057e4d621be51; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <44216e3dd4455b798899b50eedb0ec3831dff8e0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <adb8014599fdf0818d3d93f1f74e06cd0bdec08d; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <e3d42598f2995cdc07b7779874e7c5f8a1b773db

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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