CVE-2024-39507

Kernel crash via unsynchronized RoCE notification

Published Jul 12, 2024 · Updated Aug 5, 2026

Race condition in the Linux hns3 network driver allows local users to crash the kernel during concurrent link-status changes. In hclge_main.c, a link-status path can notify the RoCE client after uninitialization begins because registration and in-flight updates are not synchronized. Exploitation requires low-privileged local access and an hns3 device using its RoCE client; winning the race interrupts the entire host.

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

What happened

Race condition in the Linux hns3 network driver allows local users to crash the kernel during concurrent link-status changes. In hclge_main.c, a link-status path can notify the RoCE client after uninitialization begins because registration and in-flight updates are not synchronized. Exploitation requires low-privileged local access and an hns3 device using its RoCE client; winning the race interrupts the entire host.

The record

CVE
CVE-2024-39507
Published
Jul 12, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 12, 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=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <12cda920212a49fa22d9e8b9492ac4ea013310a4
  2. Affected versionversion=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <62b5dfb67bfa8bd0301bf3442004563495f9ee48
  3. Affected versionversion=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <689de7c3bfc7d47e0eacc641c4ce4a0f579aeefa
  4. Affected versionversion=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <6d0007f7b69d684879a0f598a042e40244d3cf63
  5. Affected versionversion=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <b2c5024b771cd1dd8175d5f6949accfadbab7edd
  6. Affected versionversion=5.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <12cda920212a49fa22d9e8b9492ac4ea013310a4; version=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <62b5dfb67bfa8bd0301bf3442004563495f9ee48; version=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <689de7c3bfc7d47e0eacc641c4ce4a0f579aeefa; version=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <6d0007f7b69d684879a0f598a042e40244d3cf63; version=45e92b7e4e27a427de7e87d5c4d63d4ce7ba02ab <b2c5024b771cd1dd8175d5f6949accfadbab7edd; version=5.1

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.0Linux kernel CNACVSS:3.1/AV:L/AC:H/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.

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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
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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