CVE-2026-46270

Kernel memory corruption via rt9455 IRQ race

Published Jun 3, 2026 · Updated Jun 3, 2026

Use-after-free in the Linux Kernel rt9455 power-supply driver allows local users to crash the system or corrupt kernel memory. The driver's managed resources are registered in an order that frees the power_supply handle before removing its IRQ handler, which can pass the freed or uninitialized handle to power_supply_changed(). Exposure requires the rt9455 driver and an interrupt during device probing or removal; the documented outcomes are a kernel crash or silent memory corruption.

CVSS severity8.4
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

Use-after-free in the Linux Kernel rt9455 power-supply driver allows local users to crash the system or corrupt kernel memory. The driver's managed resources are registered in an order that frees the power_supply handle before removing its IRQ handler, which can pass the freed or uninitialized handle to power_supply_changed(). Exposure requires the rt9455 driver and an interrupt during device probing or removal; the documented outcomes are a kernel crash or silent memory corruption.

The record

CVE
CVE-2026-46270
Published
Jun 3, 2026
Updated
Jun 3, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-416, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 3, 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=4.2
  2. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <2178dc65d45e2f7bcaa8af8d80d100419bdab251
  3. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <62d753b916bd500bb269b7078cdab73198ab4718
  4. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <64e15155095f39f4dec9b4659da1238ef8fc54d4
  5. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <721449a15170fc5f028a7576d7f65b9f60d53482
  6. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <a39f8f06216f73ef40e71e2fe4ad071964c1fd36
  7. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <af261f218a7606f93d2c786353d60bb4feb56ef0
  8. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc
  9. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <e2febe375e5ea5afed92f4cd9711bde8f24ee6d2

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=4.2; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <2178dc65d45e2f7bcaa8af8d80d100419bdab251; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <62d753b916bd500bb269b7078cdab73198ab4718; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <64e15155095f39f4dec9b4659da1238ef8fc54d4; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <721449a15170fc5f028a7576d7f65b9f60d53482; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <a39f8f06216f73ef40e71e2fe4ad071964c1fd36; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <af261f218a7606f93d2c786353d60bb4feb56ef0; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <d4e2e3c3caa26b93aa9f36d0a6824b584e2a8dfc; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <e2febe375e5ea5afed92f4cd9711bde8f24ee6d2

Published CVSS scores

8.4kernel.orgCVSS:3.1/AV:L/AC:L/PR:N/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
T1499.004Application or System Exploitation

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