CVE-2026-90130Hinoki check available

Kernel fault via invalid worker-pointer cleanup

Published Sep 17, 2026 · Updated Sep 17, 2026

Invalid-pointer dereference in Linux 6.4 vdpa_sim allows local users to trigger a kernel fault during failed simulator initialization. When kthread_run_worker() fails, vdpasim_create() retains its ERR_PTR result and vdpasim_free() passes it to kthread_destroy_worker() during device release. Reachability requires simulator creation and worker-creation failure; the resulting general protection fault interrupts kernel execution, but attacker control over that failure is not established.

CVSS severity4.1
Medium
EPSS probability0.20%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Invalid-pointer dereference in Linux 6.4 vdpa_sim allows local users to trigger a kernel fault during failed simulator initialization. When kthread_run_worker() fails, vdpasim_create() retains its ERR_PTR result and vdpasim_free() passes it to kthread_destroy_worker() during device release. Reachability requires simulator creation and worker-creation failure; the resulting general protection fault interrupts kernel execution, but attacker control over that failure is not established.

The record

CVE
CVE-2026-90130
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=6.4
  2. Affected versionversion=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0
  3. Affected versionversion=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <68b726b3a01fb02a68843781b17d05ef3d759987
  4. Affected versionversion=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <bd670e5dfd2b01fd9692f61fa1456434c54026a4
  5. Affected versionversion=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <ca6f3fa599cb764518df595368b743f856fdb516
  6. Affected versionversion=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <feafa109f031ed111f7f968e447c13985db498e0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.4; version=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <05ddc94afb69e36df59e88cfa9e5c7bf9d10cfd0; version=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <68b726b3a01fb02a68843781b17d05ef3d759987; version=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <bd670e5dfd2b01fd9692f61fa1456434c54026a4; version=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <ca6f3fa599cb764518df595368b743f856fdb516; version=76acfa7bc54f1e3b9dde396e0a3534493419fd6f <feafa109f031ed111f7f968e447c13985db498e0

Published CVSS scores

5.5TenableCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5TenableCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
4.9TenableAV:L/AC:L/Au:N/C:N/I:N/A:C

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.

Activity data is delayed. The latest report is Sep 28, 2026.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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