CVE-2024-38591

System hang via interrupt-context SRQ table deadlock

Published Jun 19, 2024 · Updated May 11, 2026

Improper locking in affected Linux kernel branches starting at 5.0 allows local users to hang systems through an HNS RDMA SRQ event. The HNS RoCE shared receive queue table uses ordinary xa_store() and xa_erase() operations whose lock can deadlock when the asynchronous event queue runs in interrupt context. Reachability requires the HNS RoCE RDMA path and low-privileged local access; the bounded consequence is a kernel deadlock and service hang.

CVSS severity5.5
Medium
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper locking in affected Linux kernel branches starting at 5.0 allows local users to hang systems through an HNS RDMA SRQ event. The HNS RoCE shared receive queue table uses ordinary xa_store() and xa_erase() operations whose lock can deadlock when the asynchronous event queue runs in interrupt context. Reachability requires the HNS RoCE RDMA path and low-privileged local access; the bounded consequence is a kernel deadlock and service hang.

The record

CVE
CVE-2024-38591
Published
Jun 19, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-667, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 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=5.0
  2. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <22c915af31bd84ffaa46145e317f53333f94a868
  3. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <4a3be1a0ffe04c085dd7f79be97c91b0c786df3d
  4. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <605889754ee68aacf7c381938fcd5eb654e71822
  5. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <72dc542f0d8977e7d41d610db6bb65c47cad43e9
  6. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <756ddbe665ea7f9416951bd76731b174d136eea0
  7. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <b46494b6f9c19f141114a57729e198698f40af37
  8. Affected versionversion=81fce6291d9999cee692e4118134a8c850b60857 <d271e66abac5c7eb8de345b9b44d89f777437a4c

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.0; version=81fce6291d9999cee692e4118134a8c850b60857 <22c915af31bd84ffaa46145e317f53333f94a868; version=81fce6291d9999cee692e4118134a8c850b60857 <4a3be1a0ffe04c085dd7f79be97c91b0c786df3d; version=81fce6291d9999cee692e4118134a8c850b60857 <605889754ee68aacf7c381938fcd5eb654e71822; version=81fce6291d9999cee692e4118134a8c850b60857 <72dc542f0d8977e7d41d610db6bb65c47cad43e9; version=81fce6291d9999cee692e4118134a8c850b60857 <756ddbe665ea7f9416951bd76731b174d136eea0; version=81fce6291d9999cee692e4118134a8c850b60857 <b46494b6f9c19f141114a57729e198698f40af37; version=81fce6291d9999cee692e4118134a8c850b60857 <d271e66abac5c7eb8de345b9b44d89f777437a4c

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

CWE-667Improper Locking
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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