CVE-2026-93224Network attack vectorHinoki check available

Kernel resource leak via failed RDMA accepts

Published Sep 24, 2026 · Updated Sep 24, 2026

Resource-management errors in the Linux svcrdma transport allow attackers to leak kernel resources through failed RPC-over-RDMA accepts. When svc_rdma_accept() exits before registration succeeds, cleanup unconditionally unregisters a zero-initialized entry, erases another caller's slot, drops an unmatched device reference, and fails to release the new transport. Reachability requires an RPC-over-RDMA service and an accept failure before registration; each failed accept pins the transport and its network namespace, while the unmatched unregister can corrupt shared device bookkeeping.

CVSS severityUnavailable
Unscored
EPSS probability0.45%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Resource-management errors in the Linux svcrdma transport allow attackers to leak kernel resources through failed RPC-over-RDMA accepts. When svc_rdma_accept() exits before registration succeeds, cleanup unconditionally unregisters a zero-initialized entry, erases another caller's slot, drops an unmatched device reference, and fails to release the new transport. Reachability requires an RPC-over-RDMA service and an accept failure before registration; each failed accept pins the transport and its network namespace, while the unmatched unregister can corrupt shared device bookkeeping.

The record

CVE
CVE-2026-93224
Published
Sep 24, 2026
Updated
Sep 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 24, 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=6.12.35 <6.12.109
  2. Affected versionversion=6.15.4 <6.16
  3. Affected versionversion=6.16
  4. Affected versionversion=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <26190394c64c9429481fc88a4738f70bb92fb352
  5. Affected versionversion=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <45a444a17240f4fa2235f0dfd4a96fc80f1eb2c2
  6. Affected versionversion=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <5aabe070c00e5bdf4ab150fb5f72ad5f266d6241
  7. Affected versionversion=cb3cba0ec372fa7c5f5f5c12990bef02e458ab86 <0335800071a6dfdf7d21d729b5e7d8fa98936211
  8. Affected versionversion=d310955106c358c8e1ea682defd8e21af44a6cba

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.12.35 <6.12.109; version=6.15.4 <6.16; version=6.16; version=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <26190394c64c9429481fc88a4738f70bb92fb352; version=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <45a444a17240f4fa2235f0dfd4a96fc80f1eb2c2; version=8ac6fcae5dc0e801f1c82a83f5ae2c0a4db19932 <5aabe070c00e5bdf4ab150fb5f72ad5f266d6241; version=cb3cba0ec372fa7c5f5f5c12990bef02e458ab86 <0335800071a6dfdf7d21d729b5e7d8fa98936211; version=d310955106c358c8e1ea682defd8e21af44a6cba

Published CVSS scores

No CVSS assessment is available in this record.

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.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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