CVE-2024-43874

Local kernel crash via absent SEV device state

Published Aug 21, 2024 · Updated May 11, 2026

A null-pointer dereference in Linux kernel 6.9 allows local users to interrupt the host during CCP SEV driver removal. __sev_snp_shutdown_locked reads SEV state through uninitialized psp_device or sev_device structures instead of returning when either structure is absent. Triggering requires a kernel built with DEBUG_TEST_DRIVER_REMOVE and the CCP SEV device path; the resulting kernel oops interrupts the affected host.

CVSS severity5.5
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A null-pointer dereference in Linux kernel 6.9 allows local users to interrupt the host during CCP SEV driver removal. __sev_snp_shutdown_locked reads SEV state through uninitialized psp_device or sev_device structures instead of returning when either structure is absent. Triggering requires a kernel built with DEBUG_TEST_DRIVER_REMOVE and the CCP SEV device path; the resulting kernel oops interrupts the affected host.

The record

CVE
CVE-2024-43874
Published
Aug 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 21, 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=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <468e3295774d0edce15f4ae475913b5076dd4f40
  2. Affected versionversion=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <bbf2c94503f6a421ed9b79e300d8085810da765d
  3. Affected versionversion=6.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <468e3295774d0edce15f4ae475913b5076dd4f40; version=1ca5614b84eed5904f65f143e0e7aaab0ac4c6b2 <bbf2c94503f6a421ed9b79e300d8085810da765d; version=6.9

Published CVSS scores

5.5NISTCVSS: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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-476NULL Pointer Dereference
T1499Endpoint Denial of Service

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

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Your stack

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