CVE-2026-80822Hinoki check available

Kernel crash via unchecked IRQ-name allocation

Published Sep 4, 2026 · Updated Sep 4, 2026

NULL pointer dereference in Linux 6.18 before 6.18.47, 7.1 before 7.1.11, and 7.2 before 7.2.1 allows attackers to crash the kernel. In mchp_ipc_get_cluster_aggr_irq(), devm_kasprintf() can fail while allocating an IRQ name, and its NULL result is passed to platform_get_irq_byname_optional(). Reachability requires the Microchip IPC SBI mailbox driver to probe and the allocation to fail; no remote trigger is documented.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

NULL pointer dereference in Linux 6.18 before 6.18.47, 7.1 before 7.1.11, and 7.2 before 7.2.1 allows attackers to crash the kernel. In mchp_ipc_get_cluster_aggr_irq(), devm_kasprintf() can fail while allocating an IRQ name, and its NULL result is passed to platform_get_irq_byname_optional(). Reachability requires the Microchip IPC SBI mailbox driver to probe and the allocation to fail; no remote trigger is documented.

The record

CVE
CVE-2026-80822
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 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=0 <6.18.47
  2. Affected versionversion=0 <7.1.11
  3. Affected versionversion=0 <7.2.1
  4. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <364edaedf4125825781a12c84c77699780d52a16
  5. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b233e7836d98d1790e71f5f3734a86409664f341
  6. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b37c4d0a2fd90c0c31223acd37f763eb8953ed1a
  7. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df5c9816986b2f4d754ef3aa65a92382e9b39c4a

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=0 <6.18.47; version=0 <7.1.11; version=0 <7.2.1; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <364edaedf4125825781a12c84c77699780d52a16; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b233e7836d98d1790e71f5f3734a86409664f341; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <b37c4d0a2fd90c0c31223acd37f763eb8953ed1a; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <df5c9816986b2f4d754ef3aa65a92382e9b39c4a

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

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 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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