CVE-2026-72468

Kernel crash via xprtrdma removal race

Published Aug 15, 2026 · Updated Aug 15, 2026

NULL pointer dereference in Linux kernel 6.11 allows local users with administrative privileges to crash the kernel via an NFS/RDMA race. rpcrdma_create_id() publishes ep->re_rn before rpcrdma_ep_create() stores the new rdma_cm_id in ep->re_id, so concurrent device removal passes NULL to a tracepoint that dereferences the identifier. Triggering the crash requires administrative ability to race an NFS/RDMA mount against removal of the associated RDMA device.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in Linux kernel 6.11 allows local users with administrative privileges to crash the kernel via an NFS/RDMA race. rpcrdma_create_id() publishes ep->re_rn before rpcrdma_ep_create() stores the new rdma_cm_id in ep->re_id, so concurrent device removal passes NULL to a tracepoint that dereferences the identifier. Triggering the crash requires administrative ability to race an NFS/RDMA mount against removal of the associated RDMA device.

The record

CVE
CVE-2026-72468
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

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

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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=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <264ccd7871915749bee55fe0c39467a7f08d5479
  2. Affected versionversion=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <28743571c17b58c21a7216fc9faaf8028df5869b
  3. Affected versionversion=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <51248d877bbc6e604e38aeaf776c2781cb4f0dbd
  4. Affected versionversion=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <bb7caa63e1db22fd03e8dc591b12169e99169dff
  5. Affected versionversion=6.11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <264ccd7871915749bee55fe0c39467a7f08d5479; version=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <28743571c17b58c21a7216fc9faaf8028df5869b; version=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <51248d877bbc6e604e38aeaf776c2781cb4f0dbd; version=3f4eb9ff923413cdb4c7e171c06d3564f6286712 <bb7caa63e1db22fd03e8dc591b12169e99169dff; version=6.11

Published CVSS scores

5.5SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.1Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application 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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