CVE-2026-23068

Kernel memory corruption via probe-path double free

Published Feb 4, 2026 · Updated Feb 4, 2026

A double free in the Linux kernel SPI Spreadtrum ADI driver corrupts kernel memory during a failed device probe. The probe error path manually releases a controller registered for device-managed cleanup, so the device core releases the same spi_controller again. The path requires CAP_SYS_ADMIN and failure of devm_register_restart_handler(), a kernel-internal condition that attackers cannot invoke or influence.

CVSS severity7.8
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

A double free in the Linux kernel SPI Spreadtrum ADI driver corrupts kernel memory during a failed device probe. The probe error path manually releases a controller registered for device-managed cleanup, so the device core releases the same spi_controller again. The path requires CAP_SYS_ADMIN and failure of devm_register_restart_handler(), a kernel-internal condition that attackers cannot invoke or influence.

The record

CVE
CVE-2026-23068
Published
Feb 4, 2026
Updated
Feb 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-415
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Feb 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=4.17
  2. Affected versionversion=ac1775012058e13ef1522938e27f5973d9e3f053 <346775f2b4cf839177e8e86b94aa180a06dc15b0
  3. Affected versionversion=ac1775012058e13ef1522938e27f5973d9e3f053 <383d4f5cffcc8df930d95b06518a9d25a6d74aac
  4. Affected versionversion=ac1775012058e13ef1522938e27f5973d9e3f053 <417cdfd9b9f986e95bfcb1d68eb443e6e0a15f8c
  5. Affected versionversion=ac1775012058e13ef1522938e27f5973d9e3f053 <f6d6b3f172df118db582fe5ec43ae223a55d99cf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.17; version=ac1775012058e13ef1522938e27f5973d9e3f053 <346775f2b4cf839177e8e86b94aa180a06dc15b0; version=ac1775012058e13ef1522938e27f5973d9e3f053 <383d4f5cffcc8df930d95b06518a9d25a6d74aac; version=ac1775012058e13ef1522938e27f5973d9e3f053 <417cdfd9b9f986e95bfcb1d68eb443e6e0a15f8c; version=ac1775012058e13ef1522938e27f5973d9e3f053 <f6d6b3f172df118db582fe5ec43ae223a55d99cf

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-415Double Free

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo