CVE-2025-22078

System crash via unchecked keep-alive thread pointer

Published Apr 16, 2025 · Updated May 11, 2026

NULL pointer dereference in the vchiq_arm driver in Linux allows local users to crash the system during driver removal. The removal path passes ka_thread to kthread_stop without ensuring that connection-state handling created a valid task_struct pointer. Affected versions are 6.11 through 6.12.22, 6.13 through 6.13.10, and 6.14 through 6.14.1; reaching the crash requires CAP_SYS_MODULE or root privileges to unload the driver.

CVSS severity5.5
Medium
EPSS probability0.20%
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 vchiq_arm driver in Linux allows local users to crash the system during driver removal. The removal path passes ka_thread to kthread_stop without ensuring that connection-state handling created a valid task_struct pointer. Affected versions are 6.11 through 6.12.22, 6.13 through 6.13.10, and 6.14 through 6.14.1; reaching the crash requires CAP_SYS_MODULE or root privileges to unload the driver.

The record

CVE
CVE-2025-22078
Published
Apr 16, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Apr 16, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=6.11
  2. Affected versionversion=863a756aaf49ed23d25bbb1dad999a85f09e1836 <1817c4b85011998604e5ff9a80a6e01adb7e7e81
  3. Affected versionversion=863a756aaf49ed23d25bbb1dad999a85f09e1836 <3db89bc6d973e2bcaa852f6409c98c228f39a926
  4. Affected versionversion=863a756aaf49ed23d25bbb1dad999a85f09e1836 <a915c896f95a989a7759a73f8c064f5dc3775175
  5. Affected versionversion=863a756aaf49ed23d25bbb1dad999a85f09e1836 <bd38395b901327f77a82112f006240de22cf2ceb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.11; version=863a756aaf49ed23d25bbb1dad999a85f09e1836 <1817c4b85011998604e5ff9a80a6e01adb7e7e81; version=863a756aaf49ed23d25bbb1dad999a85f09e1836 <3db89bc6d973e2bcaa852f6409c98c228f39a926; version=863a756aaf49ed23d25bbb1dad999a85f09e1836 <a915c896f95a989a7759a73f8c064f5dc3775175; version=863a756aaf49ed23d25bbb1dad999a85f09e1836 <bd38395b901327f77a82112f006240de22cf2ceb

Published CVSS scores

6.8SUSECVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS: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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

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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