CVE-2024-38568

Local kernel memory corruption via oversized event groups

Published Jun 19, 2024 · Updated Aug 5, 2026

Out-of-bounds write in the Linux kernel HNS3 PMU driver from 6.0 allows local users to corrupt kernel memory via oversized perf event groups. The hns3_pmu_validate_event_group function writes event_group entries without stopping when num_events reaches HNS3_PMU_MAX_HW_EVENTS. Reachability requires a local low-privileged account and compatible HiSilicon HNS3 PMU hardware; successful corruption can crash the host or alter kernel-controlled data.

CVSS severity7.8
High
EPSS probability0.23%
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 HNS3 PMU driver from 6.0 allows local users to corrupt kernel memory via oversized perf event groups. The hns3_pmu_validate_event_group function writes event_group entries without stopping when num_events reaches HNS3_PMU_MAX_HW_EVENTS. Reachability requires a local low-privileged account and compatible HiSilicon HNS3 PMU hardware; successful corruption can crash the host or alter kernel-controlled data.

The record

CVE
CVE-2024-38568
Published
Jun 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-129, CAPEC-100, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.0
  2. Affected versionversion=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <3669baf308308385a2ab391324abdde5682af5aa
  3. Affected versionversion=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e
  4. Affected versionversion=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <aa2d3d678895c8eedd003f1473f87d3f06fe6ec7
  5. Affected versionversion=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <b5120d322763c15c978bc47beb3b6dff45624304
  6. Affected versionversion=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <be1fa711e59c874d049f592aef1d4685bdd22bdf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.0; version=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <3669baf308308385a2ab391324abdde5682af5aa; version=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <81bdd60a3d1d3b05e6cc6674845afb1694dd3a0e; version=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <aa2d3d678895c8eedd003f1473f87d3f06fe6ec7; version=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <b5120d322763c15c978bc47beb3b6dff45624304; version=66637ab137b44914356a9dc7a9b3f8ebcf0b0695 <be1fa711e59c874d049f592aef1d4685bdd22bdf

Published CVSS scores

7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-129Improper Validation of Array Index
CAPEC-100Overflow Buffers
T1068Exploitation for Privilege Escalation

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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