CVE-2026-43485

Kernel panic via failed Nouveau ACPI probes

Published May 13, 2026 · Updated May 13, 2026

Improper warning handling in Linux Kernel 6.7 through 6.18.18 and 6.19 through 6.19.8 allows local users to interrupt service. On failed Nouveau GSP ACPI evaluations, r535_gsp_acpi_caps and r535_gsp_acpi_jt pass the error result to WARN_ON instead of returning it normally. Linux has not published how local users can force those ACPI failures; a warning panics the kernel only when panic_on_warn is enabled, while the default is to continue.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper warning handling in Linux Kernel 6.7 through 6.18.18 and 6.19 through 6.19.8 allows local users to interrupt service. On failed Nouveau GSP ACPI evaluations, r535_gsp_acpi_caps and r535_gsp_acpi_jt pass the error result to WARN_ON instead of returning it normally. Linux has not published how local users can force those ACPI failures; a warning panics the kernel only when panic_on_warn is enabled, while the default is to continue.

The record

CVE
CVE-2026-43485
Published
May 13, 2026
Updated
May 13, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 13, 2026CVE publishedPublication date reported by the CVE source.
  2. May 13, 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=176fdcbddfd288408ce8571c1760ad618d962096 <214b6bde0e941a34ba877cf2f26f85d62fb5d598
  2. Affected versionversion=176fdcbddfd288408ce8571c1760ad618d962096 <9478c166c46934160135e197b049b5a05753f2ad
  3. Affected versionversion=176fdcbddfd288408ce8571c1760ad618d962096 <d1c991c860496d97044802ea54b30f20db468c1d
  4. Affected versionversion=6.7

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=176fdcbddfd288408ce8571c1760ad618d962096 <214b6bde0e941a34ba877cf2f26f85d62fb5d598; version=176fdcbddfd288408ce8571c1760ad618d962096 <9478c166c46934160135e197b049b5a05753f2ad; version=176fdcbddfd288408ce8571c1760ad618d962096 <d1c991c860496d97044802ea54b30f20db468c1d; version=6.7

Published CVSS scores

5.5NIST NVDCVSS: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

T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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