CVE-2024-49569

System hang via quiesced admin queue teardown

Published Jan 11, 2025 · Updated Aug 5, 2026

Denial of service in the Linux kernel nvme-rdma host driver allows attackers to hang the kernel during failed controller creation. The teardown path quiesces admin_q before canceling requests but destroys it without first unquiescing it, so pending requests cannot drain and blk_mq_freeze_queue_wait() waits forever. Reachability requires low privileges and an NVMe/RDMA configuration in which controller creation fails; the bounded consequence is a persistent system hang.

CVSS severity5.7
Medium
EPSS probability0.82%
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 nvme-rdma host driver allows attackers to hang the kernel during failed controller creation. The teardown path quiesces admin_q before canceling requests but destroys it without first unquiescing it, so pending requests cannot drain and blk_mq_freeze_queue_wait() waits forever. Reachability requires low privileges and an NVMe/RDMA configuration in which controller creation fails; the bounded consequence is a persistent system hang.

The record

CVE
CVE-2024-49569
Published
Jan 11, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 11, 2025CVE 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=5.10.21 <5.11
  2. Affected versionversion=5.11.4 <5.12
  3. Affected versionversion=5.12
  4. Affected versionversion=5.4.103 <5.5
  5. Affected versionversion=7da81eaf8710130a9e63d7429627183be5a93787
  6. Affected versionversion=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <05b436f3cf65c957eff86c5ea5ddfa2604b32c63
  7. Affected versionversion=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <427036030f4d796533dcadba9b845896cb6c10a7
  8. Affected versionversion=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <5858b687559809f05393af745cbadf06dee61295
  9. Affected versionversion=a9ea34d2717a8c8892d3c5677329de9485e325ac
  10. Affected versionversion=caed0b3851a4f52afd1ef77a27b30410fe7b68c7

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10.21 <5.11; version=5.11.4 <5.12; version=5.12; version=5.4.103 <5.5; version=7da81eaf8710130a9e63d7429627183be5a93787; version=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <05b436f3cf65c957eff86c5ea5ddfa2604b32c63; version=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <427036030f4d796533dcadba9b845896cb6c10a7; version=958dc1d32c80566f58d18f05ef1f05bd32d172c1 <5858b687559809f05393af745cbadf06dee61295; version=a9ea34d2717a8c8892d3c5677329de9485e325ac; version=caed0b3851a4f52afd1ef77a27b30410fe7b68c7

Published CVSS scores

5.7CanonicalCVSS:3.1/AV:A/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)
Vectoradjacent
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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