CVE-2025-39814

Kernel crash via unchecked RDMA state dereference

Published Sep 16, 2025 · Updated Sep 16, 2025

NULL pointer dereference in the Linux ice driver before 6.16.5 allows local users to crash the system by resetting an ICE PCI device. ice_unplug_aux_dev() dereferences pf->cdev_info while removing an RDMA auxiliary-bus device even when that state was never created. The path is reachable only with root access when the driver lacks RDMA support, and the consequence is a kernel crash rather than data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.13%
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 the Linux ice driver before 6.16.5 allows local users to crash the system by resetting an ICE PCI device. ice_unplug_aux_dev() dereferences pf->cdev_info while removing an RDMA auxiliary-bus device even when that state was never created. The path is reachable only with root access when the driver lacks RDMA support, and the consequence is a kernel crash rather than data disclosure or modification.

The record

CVE
CVE-2025-39814
Published
Sep 16, 2025
Updated
Sep 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 16, 2025Record 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=6.16
  2. Affected versionversion=c24a65b6a27c78d8540409800886b6622ea86ebf <60dfe2434eed13082f26eb7409665dfafb38fa51
  3. Affected versionversion=c24a65b6a27c78d8540409800886b6622ea86ebf <db783756a7d7cfaea039411971d0dc0a374e85cb

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

The Linux Kernel Organization · Linuxversion=6.16; version=c24a65b6a27c78d8540409800886b6622ea86ebf <60dfe2434eed13082f26eb7409665dfafb38fa51; version=c24a65b6a27c78d8540409800886b6622ea86ebf <db783756a7d7cfaea039411971d0dc0a374e85cb

Published CVSS scores

5.5CanonicalCVSS:3.1/AV:L/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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