CVE-2026-90202Hinoki check available

Kernel crash via freeing unallocated PCIe buffers

Published Sep 17, 2026 · Updated Sep 17, 2026

Linux 4.16 mpt3sas cleanup dereferences NULL after partial PCIe SGL allocation failure, interrupting kernel operation. The _base_release_memory_pools() loop passes unallocated ioc->pcie_sg_lookup[] entries to dma_pool_free() without checking their buffer pointers. The failure requires partial buffer allocation followed by cleanup; debug kernels emit a bad DMA warning instead, and no attacker-controlled trigger is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Linux 4.16 mpt3sas cleanup dereferences NULL after partial PCIe SGL allocation failure, interrupting kernel operation. The _base_release_memory_pools() loop passes unallocated ioc->pcie_sg_lookup[] entries to dma_pool_free() without checking their buffer pointers. The failure requires partial buffer allocation followed by cleanup; debug kernels emit a bad DMA warning instead, and no attacker-controlled trigger is documented.

The record

CVE
CVE-2026-90202
Published
Sep 17, 2026
Updated
Sep 17, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 17, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=4.16
  2. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <240b582b6372bebb1245d911add9954b7dd6c02d
  3. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <2dbdd025b228110ccbfbab95fe16e098313a14af
  4. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <3361709fb6f6568b157c6f24ed21a4a5d86d73db
  5. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <a61181f9ee30a98d2350c1bff32954a7521f9a23
  6. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <afedf35df054bd713e9e13771aa0a056932c5c67
  7. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <b9f679dfe629004b593f018df33b330d799bcee4
  8. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <bc3398db3b64729b4a7907af317daad04795ad40
  9. Affected versionversion=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <e2cd23443d3616ea0876f27762b17e2ec67d896c

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4.16; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <240b582b6372bebb1245d911add9954b7dd6c02d; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <2dbdd025b228110ccbfbab95fe16e098313a14af; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <3361709fb6f6568b157c6f24ed21a4a5d86d73db; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <a61181f9ee30a98d2350c1bff32954a7521f9a23; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <afedf35df054bd713e9e13771aa0a056932c5c67; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <b9f679dfe629004b593f018df33b330d799bcee4; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <bc3398db3b64729b4a7907af317daad04795ad40; version=dbec4c9040edc15442c3ebdb65408aa9d3b82c24 <e2cd23443d3616ea0876f27762b17e2ec67d896c

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.

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No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 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.

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Technologies

Your stack

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