CVE-2024-44970

Host interruption via SHAMPO WQ double unlink

Published Sep 4, 2024 · Updated Aug 5, 2026

Linked-list corruption in the Linux kernel allows local users to interrupt service through the mlx5e SHAMPO receive path. The mlx5e receive handler calls mlx5_wq_ll_pop() again when a fully consumed WQE later receives a completion entry reporting zero consumed strides, corrupting the work-queue linked list. Exploitation requires local access and an mlx5e device using SHAMPO; the reported consequence is host availability loss, not data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Linked-list corruption in the Linux kernel allows local users to interrupt service through the mlx5e SHAMPO receive path. The mlx5e receive handler calls mlx5_wq_ll_pop() again when a fully consumed WQE later receives a completion entry reporting zero consumed strides, corrupting the work-queue linked list. Exploitation requires local access and an mlx5e device using SHAMPO; the reported consequence is host availability loss, not data disclosure or modification.

The record

CVE
CVE-2024-44970
Published
Sep 4, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 4, 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=5.16
  2. Affected versionversion=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <50d8009a0ac02c3311b23a0066511f8337bd88d9
  3. Affected versionversion=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <650e24748e1e0a7ff91d5c72b72a2f2a452b5b76
  4. Affected versionversion=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <7b379353e9144e1f7460ff15f39862012c9d0d78
  5. Affected versionversion=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <fba8334721e266f92079632598e46e5f89082f30

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.16; version=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <50d8009a0ac02c3311b23a0066511f8337bd88d9; version=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <650e24748e1e0a7ff91d5c72b72a2f2a452b5b76; version=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <7b379353e9144e1f7460ff15f39862012c9d0d78; version=f97d5c2a453e26071e3b0ec12161de57c4a237c4 <fba8334721e266f92079632598e46e5f89082f30

Published CVSS scores

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.

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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

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

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Your stack

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