CVE-2026-72384

Kernel crash via uncleared chained interrupt handler

Published Aug 15, 2026 · Updated Aug 15, 2026

Expired pointer dereference in the Linux irqchip/ts4800 driver allows local users to crash the kernel after driver removal. ts4800_ic_remove() leaves the parent chained handler installed after its data is freed, so a later parent interrupt dereferences stale memory. Exploitation requires the TS-4800 interrupt controller to be bound and then removed before its parent interrupt fires; the documented consequence is a kernel crash.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Expired pointer dereference in the Linux irqchip/ts4800 driver allows local users to crash the kernel after driver removal. ts4800_ic_remove() leaves the parent chained handler installed after its data is freed, so a later parent interrupt dereferences stale memory. Exploitation requires the TS-4800 interrupt controller to be bound and then removed before its parent interrupt fires; the documented consequence is a kernel crash.

The record

CVE
CVE-2026-72384
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=4.5
  2. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <3f31f49afffa169cd01e6c37568c4df3eb1051af
  3. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <4e8d498d32b6c67d73bb8b317ff316ff37897a3e
  4. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <98bf7e54cec07d514b3575c11896a8b12d50ecc4
  5. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <9ed0dca2aa05908b33ecf0bb15c7953947529542
  6. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <b5b2b2cb6a91908e6c23958c9ce6d5ba2fdb686c
  7. Affected versionversion=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <e6b674dc341c6add7d85bec2ec22caf1aad35795

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.5; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <3f31f49afffa169cd01e6c37568c4df3eb1051af; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <4e8d498d32b6c67d73bb8b317ff316ff37897a3e; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <98bf7e54cec07d514b3575c11896a8b12d50ecc4; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <9ed0dca2aa05908b33ecf0bb15c7953947529542; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <b5b2b2cb6a91908e6c23958c9ce6d5ba2fdb686c; version=d01f8633d52e4dac5ee598b87d49fd23346ccfd6 <e6b674dc341c6add7d85bec2ec22caf1aad35795

Published CVSS scores

5.5Red HatCVSS: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-825Expired Pointer Dereference
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

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Your stack

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