CVE-2024-26945

Kernel crash via zero IAA CPU divisor

Published May 1, 2024 · Updated May 11, 2026

Divide-by-zero in the IAA crypto driver in Linux 6.8 allows local users to crash the kernel through an affected workqueue layout. rebalance_wq_table() divides the online CPU count by the IAA device count without preventing a zero cpus_per_iaa result. The path requires the Intel IAA crypto driver and more IAA devices than online CPUs, and the resulting fault interrupts the system.

CVSS severity8.4
High
EPSS probability0.24%
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

Divide-by-zero in the IAA crypto driver in Linux 6.8 allows local users to crash the kernel through an affected workqueue layout. rebalance_wq_table() divides the online CPU count by the IAA device count without preventing a zero cpus_per_iaa result. The path requires the Intel IAA crypto driver and more IAA devices than online CPUs, and the resulting fault interrupts the system.

The record

CVE
CVE-2024-26945
Published
May 1, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-369, T1499.004
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 1, 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

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=6.8
  2. Affected versionversion=ea7a5cbb43696cfacf73e61916d1860ac30b5b2f <5a7e89d3315d1be86aff8a8bf849023cda6547f7
  3. Affected versionversion=ea7a5cbb43696cfacf73e61916d1860ac30b5b2f <a5ca1be7f9817de4e93085778b3ee2219bdc2664

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.8; version=ea7a5cbb43696cfacf73e61916d1860ac30b5b2f <5a7e89d3315d1be86aff8a8bf849023cda6547f7; version=ea7a5cbb43696cfacf73e61916d1860ac30b5b2f <a5ca1be7f9817de4e93085778b3ee2219bdc2664
The Linux Kernel Organization · Linux Kernelversion=1da177e4c3f4

Published CVSS scores

8.4CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-369Divide By Zero
T1499.004Endpoint Denial of Service: Application 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