CVE-2026-74385Network attack vector

Resource exhaustion via failed NVMe/TCP TLS cleanup

Published Aug 15, 2026 · Updated Aug 15, 2026

Resource leak in the Linux kernel allows remote attackers to exhaust resources through failed NVMe/TCP TLS handshakes. nvmet_tcp_tls_handshake_done() ignores failure from nvmet_tcp_set_queue_sock(), leaving socket callbacks unset and queue and socket objects unreleased. Reachability requires an NVMe/TCP target using TLS, and repeated setup failures consume kernel resources without reported confidentiality or integrity impact.

CVSS severity7.5
High
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in the Linux kernel allows remote attackers to exhaust resources through failed NVMe/TCP TLS handshakes. nvmet_tcp_tls_handshake_done() ignores failure from nvmet_tcp_set_queue_sock(), leaving socket callbacks unset and queue and socket objects unreleased. Reachability requires an NVMe/TCP target using TLS, and repeated setup failures consume kernel resources without reported confidentiality or integrity impact.

The record

CVE
CVE-2026-74385
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.7
  2. Affected versionversion=675b453e024154dd547921c6e6d5b58747ba7e0e <22aa70f9a0544643ec37d442b6fcb1833d804462
  3. Affected versionversion=675b453e024154dd547921c6e6d5b58747ba7e0e <7ef789703e2b91775dcb36b2efa46325be31a2a0
  4. Affected versionversion=675b453e024154dd547921c6e6d5b58747ba7e0e <cba2ee57fd302727aea7d41e9d9cd0969f5df0fb

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.7; version=675b453e024154dd547921c6e6d5b58747ba7e0e <22aa70f9a0544643ec37d442b6fcb1833d804462; version=675b453e024154dd547921c6e6d5b58747ba7e0e <7ef789703e2b91775dcb36b2efa46325be31a2a0; version=675b453e024154dd547921c6e6d5b58747ba7e0e <cba2ee57fd302727aea7d41e9d9cd0969f5df0fb

Published CVSS scores

6.9SUSECVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
7.5UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.3SUSECVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.001Endpoint Denial of Service: OS 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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