CVE-2026-43175

Kernel crash via undersized clock pointer array

Published May 6, 2026 · Updated May 6, 2026

Out-of-bounds write in the Linux Kernel RS9 clock driver allows local users to crash the kernel during device unbind or suspend. The driver registers eight clk_hw pointers for the 9FGV0841, but rs9_driver_data.clk_dif provides only four slots, so indices 4 through 7 overwrite adjacent kernel memory. Exposure requires the 9FGV0841 hardware and affected driver; the documented consequence is a kernel crash rather than code execution.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds write in the Linux Kernel RS9 clock driver allows local users to crash the kernel during device unbind or suspend. The driver registers eight clk_hw pointers for the 9FGV0841, but rs9_driver_data.clk_dif provides only four slots, so indices 4 through 7 overwrite adjacent kernel memory. Exposure requires the 9FGV0841 hardware and affected driver; the documented consequence is a kernel crash rather than code execution.

The record

CVE
CVE-2026-43175
Published
May 6, 2026
Updated
May 6, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 6, 2026CVE publishedPublication date reported by the CVE source.
  2. May 6, 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=6.8
  2. Affected versionversion=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <2f926875dffe2226ea26d129e16d9092cccd03aa
  3. Affected versionversion=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <5ec820fc28d0b8a0f3890d476b1976f20e8343cc
  4. Affected versionversion=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <82a34f344999d8029bcebf131028fa519140c7cc
  5. Affected versionversion=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <da86ca15d7389ee0b5df08e8f70c39354e6b8a4b

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=6.8; version=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <2f926875dffe2226ea26d129e16d9092cccd03aa; version=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <5ec820fc28d0b8a0f3890d476b1976f20e8343cc; version=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <82a34f344999d8029bcebf131028fa519140c7cc; version=f0e5e1800204b82af6d3e8ef03012ab4afc22358 <da86ca15d7389ee0b5df08e8f70c39354e6b8a4b

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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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