CVE-2025-68176

Kernel NULL dereference via missing ops check

Published Dec 16, 2025 · Updated Dec 16, 2025

NULL pointer dereference in the Cadence PCIe controller in Linux allows attackers to trigger a kernel fault during PCIe link setup. Cadence glue drivers can leave cdns_pcie::ops unset, but controller code dereferences that optional operations table without checking it first. Reachability requires a Cadence-based platform whose glue driver omits the table; the CNA specifically identifies the upcoming Sophgo platform rather than existing deployments.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
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 Cadence PCIe controller in Linux allows attackers to trigger a kernel fault during PCIe link setup. Cadence glue drivers can leave cdns_pcie::ops unset, but controller code dereferences that optional operations table without checking it first. Reachability requires a Cadence-based platform whose glue driver omits the table; the CNA specifically identifies the upcoming Sophgo platform rather than existing deployments.

The record

CVE
CVE-2025-68176
Published
Dec 16, 2025
Updated
Dec 16, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 16, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 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=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d0bb756f002810d249caee51f3f1c309f3cdab5
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1810b2fd7375de88a74976dcd402b29088e479ed
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <363448d069e29685ca37a118065121e486387af3
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <49a6c160ad4812476f8ae1a8f4ed6d15adfa6c09
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <953eb3796ef06b8ea3bf6bdde14156255bc75866
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5dbe92ac8a4ca6226093241f95f9cb1b0d2e0e1
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <eb3d29ca0820fa3d7cccad47d2da56c9ab5469ed

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <0d0bb756f002810d249caee51f3f1c309f3cdab5; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <1810b2fd7375de88a74976dcd402b29088e479ed; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <363448d069e29685ca37a118065121e486387af3; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <49a6c160ad4812476f8ae1a8f4ed6d15adfa6c09; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <953eb3796ef06b8ea3bf6bdde14156255bc75866; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <d5dbe92ac8a4ca6226093241f95f9cb1b0d2e0e1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <eb3d29ca0820fa3d7cccad47d2da56c9ab5469ed

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.

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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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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