CVE-2024-36962

Network-processing hang via IRQ lock recursion

Published Jun 3, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel KS8851 SPI driver allows local users to hang network processing through received packets. The IRQ handler calls netif_rx while holding a mutex, allowing the resulting net_rx_action softirq to enter start_xmit and reclaim the same lock. Reachability requires an active KS8851 SPI interface; the resulting deadlock stalls its IRQ thread and network processing.

CVSS severity5.5
Medium
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Denial of service in the Linux kernel KS8851 SPI driver allows local users to hang network processing through received packets. The IRQ handler calls netif_rx while holding a mutex, allowing the resulting net_rx_action softirq to enter start_xmit and reclaim the same lock. Reachability requires an active KS8851 SPI interface; the resulting deadlock stalls its IRQ thread and network processing.

The record

CVE
CVE-2024-36962
Published
Jun 3, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 3, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=492337a4fbd1421b42df684ee9b34be2a2722540 <8a3ff43dcbab7c96f9e8cf2bd1049ab8d6e59545
  2. Affected versionversion=49d5d70538b6b8f2a3f8f1ac30c1f921d4a0929b <7e2901a2a9195da76111f351584bf77552a038f0
  3. Affected versionversion=6.1.87 <6.1.91
  4. Affected versionversion=6.6.28 <6.6.31
  5. Affected versionversion=6.8.7 <6.8.10
  6. Affected versionversion=be0384bf599cf1eb8d337517feeb732d71f75a6f <e0863634bf9f7cf36291ebb5bfa2d16632f79c49
  7. Affected versionversion=cba376eb036c2c20077b41d47b317d8218fe754f <ae87f661f3c1a3134a7ed86ab69bf9f12af88993

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=492337a4fbd1421b42df684ee9b34be2a2722540 <8a3ff43dcbab7c96f9e8cf2bd1049ab8d6e59545; version=49d5d70538b6b8f2a3f8f1ac30c1f921d4a0929b <7e2901a2a9195da76111f351584bf77552a038f0; version=6.1.87 <6.1.91; version=6.6.28 <6.6.31; version=6.8.7 <6.8.10; version=be0384bf599cf1eb8d337517feeb732d71f75a6f <e0863634bf9f7cf36291ebb5bfa2d16632f79c49; version=cba376eb036c2c20077b41d47b317d8218fe754f <ae87f661f3c1a3134a7ed86ab69bf9f12af88993

Published CVSS scores

6.2CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo