CVE-2024-56754

Local service interruption via CAAM shutdown type confusion

Published Dec 29, 2024 · Updated May 11, 2026

Type confusion in the Linux CAAM Queue Interface in affected 5.5 and later branches allows local users to interrupt system service. The caam_qi_init registration passes a struct device pointer to caam_qi_shutdown, which interprets it as struct caam_drv_private and fails to release resources correctly. Reachability requires the CAAM Queue Interface driver and execution of its shutdown or registration-reset path; the published consequence is limited to availability.

CVSS severity5.5
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Type confusion in the Linux CAAM Queue Interface in affected 5.5 and later branches allows local users to interrupt system service. The caam_qi_init registration passes a struct device pointer to caam_qi_shutdown, which interprets it as struct caam_drv_private and fails to release resources correctly. Reachability requires the CAAM Queue Interface driver and execution of its shutdown or registration-reset path; the published consequence is limited to availability.

The record

CVE
CVE-2024-56754
Published
Dec 29, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 29, 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=5.5
  2. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <1f8e2f597b918ca5827a5c6d00b819d064264d1c
  3. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <6187727e57aec122c8a99c464c74578c810cbe40
  4. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <66eddb8dcb61065c53098510165f14b54232bcc2
  5. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <84a185aea7b83f620699de0ea36907d588d89cf6
  6. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <ad39df0898d3f469776c19d99229be055cc2dcea
  7. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <ad980b04f51f7fb503530bd1cb328ba5e75a250e
  8. Affected versionversion=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <cc386170b3312fd7b5bc4a69a9f52d7f50814526

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.5; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <1f8e2f597b918ca5827a5c6d00b819d064264d1c; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <6187727e57aec122c8a99c464c74578c810cbe40; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <66eddb8dcb61065c53098510165f14b54232bcc2; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <84a185aea7b83f620699de0ea36907d588d89cf6; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <ad39df0898d3f469776c19d99229be055cc2dcea; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <ad980b04f51f7fb503530bd1cb328ba5e75a250e; version=f414de2e2fffd89c8a4e5b5e06b0eba5f9d8b1eb <cc386170b3312fd7b5bc4a69a9f52d7f50814526

Published CVSS scores

5.5Oracle LinuxCVSS: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

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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

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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