CVE-2024-36900

Kernel crash via premature hns3 devlink registration

Published May 30, 2024 · Updated May 11, 2026

Use of an uninitialized resource in Linux 5.15 through affected 6.x branches allows local users to crash the kernel via hns3 devlink reload. The hns3 PF and VF initialization paths register devlink before hardware setup finishes, so a concurrent reload performs register I/O against uninitialized hardware resources. The attacker needs local low-privilege access and an hns3 device being initialized; successful exploitation interrupts the entire host by crashing its kernel.

CVSS severity5.5
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of an uninitialized resource in Linux 5.15 through affected 6.x branches allows local users to crash the kernel via hns3 devlink reload. The hns3 PF and VF initialization paths register devlink before hardware setup finishes, so a concurrent reload performs register I/O against uninitialized hardware resources. The attacker needs local low-privilege access and an hns3 device being initialized; successful exploitation interrupts the entire host by crashing its kernel.

The record

CVE
CVE-2024-36900
Published
May 30, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 30, 2024CVE 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=5.15
  2. Affected versionversion=cd6242991d2e3990c828a7c2215d2d3321f1da39 <35d92abfbad88cf947c010baf34b075e40566095
  3. Affected versionversion=cd6242991d2e3990c828a7c2215d2d3321f1da39 <5c623fe0534806b627054da09b6f51b7b2f7b9cd
  4. Affected versionversion=cd6242991d2e3990c828a7c2215d2d3321f1da39 <72ede790f5a03c3957487400a1b72ebce293a2e7
  5. Affected versionversion=cd6242991d2e3990c828a7c2215d2d3321f1da39 <c98bc78ce0909ccc92005e2cb6609ec6c7942f69

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=cd6242991d2e3990c828a7c2215d2d3321f1da39 <35d92abfbad88cf947c010baf34b075e40566095; version=cd6242991d2e3990c828a7c2215d2d3321f1da39 <5c623fe0534806b627054da09b6f51b7b2f7b9cd; version=cd6242991d2e3990c828a7c2215d2d3321f1da39 <72ede790f5a03c3957487400a1b72ebce293a2e7; version=cd6242991d2e3990c828a7c2215d2d3321f1da39 <c98bc78ce0909ccc92005e2cb6609ec6c7942f69

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

CWE-908Use of Uninitialized Resource
T1499.004Application or System Exploitation

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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