CVE-2024-38590

Kernel panic via unratelimited CQE error logging

Published Jun 19, 2024 · Updated Aug 5, 2026

Denial of service in the Linux kernel RDMA/hns driver allows remote attackers to panic the kernel via repeated error CQEs. The get_cqe_status path emits an unratelimited error and hex-dumps each non-flush CQE while holding the completion-queue spinlock, saturating logs and delaying interrupt handling. Reachability requires an HNS RoCE adapter and access to the same RDMA fabric; successful flooding locks up or panics the host and exposes only bounded CQE metadata in logs.

CVSS severity7.1
High
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel RDMA/hns driver allows remote attackers to panic the kernel via repeated error CQEs. The get_cqe_status path emits an unratelimited error and hex-dumps each non-flush CQE while holding the completion-queue spinlock, saturating logs and delaying interrupt handling. Reachability requires an HNS RoCE adapter and access to the same RDMA fabric; successful flooding locks up or panics the host and exposes only bounded CQE metadata in logs.

The record

CVE
CVE-2024-38590
Published
Jun 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.002
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 19, 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=5.8
  2. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <06cf121346bbd3d83a5eea05bb87666c6b279990
  3. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <17f3741c65c4a042ae8ba094068b07a4b77e213c
  4. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <349e859952285ab9689779fb46de163f13f18f43
  5. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <45b31be4dd22827903df15c548b97b416790139b
  6. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <6f541a89ced8305da459e3ab0006e7528cf7da7b
  7. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <817a10a6df9354e67561922d2b7fce48dfbebc55
  8. Affected versionversion=7c044adca272768d821921f11d3da4587dcec68a <cc699b7eb2bc963c12ffcd37f80f45330d2924bd

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.8; version=7c044adca272768d821921f11d3da4587dcec68a <06cf121346bbd3d83a5eea05bb87666c6b279990; version=7c044adca272768d821921f11d3da4587dcec68a <17f3741c65c4a042ae8ba094068b07a4b77e213c; version=7c044adca272768d821921f11d3da4587dcec68a <349e859952285ab9689779fb46de163f13f18f43; version=7c044adca272768d821921f11d3da4587dcec68a <45b31be4dd22827903df15c548b97b416790139b; version=7c044adca272768d821921f11d3da4587dcec68a <6f541a89ced8305da459e3ab0006e7528cf7da7b; version=7c044adca272768d821921f11d3da4587dcec68a <817a10a6df9354e67561922d2b7fce48dfbebc55; version=7c044adca272768d821921f11d3da4587dcec68a <cc699b7eb2bc963c12ffcd37f80f45330d2924bd

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1kernel.orgCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.002Service Exhaustion Flood

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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