CVE-2026-80818Hinoki check available

Kernel crash via freed CMDQ access

Published Sep 4, 2026 · Updated Sep 4, 2026

Use-after-free in the Linux kernel Tegra241 CMDQv driver allows attackers to crash the kernel during a failed probe or device unbind. During devres unwind, the queue is freed before arm_smmu_impl_remove() calls tegra241_cmdqv_remove_vintf(), whose VINTF deinitialization issues CMD_SYNC against that freed memory. Reachability requires the Tegra241 arm-smmu-v3 CMDQv teardown path during a failed probe, live unbind, or iommufd viommu destruction; the published evidence demonstrates a kernel oops, not code execution.

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

Use-after-free in the Linux kernel Tegra241 CMDQv driver allows attackers to crash the kernel during a failed probe or device unbind. During devres unwind, the queue is freed before arm_smmu_impl_remove() calls tegra241_cmdqv_remove_vintf(), whose VINTF deinitialization issues CMD_SYNC against that freed memory. Reachability requires the Tegra241 arm-smmu-v3 CMDQv teardown path during a failed probe, live unbind, or iommufd viommu destruction; the published evidence demonstrates a kernel oops, not code execution.

The record

CVE
CVE-2026-80818
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?

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  1. Affected versionversion=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <5994617e09ee6016c1b094f29d9c85cac944b477
  2. Affected versionversion=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <9ff145a25c5c8a26b06ef7cf558fb536b18bba6d
  3. Affected versionversion=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <a94309bb99eaf0c6a2ace4927864486d19458eb5
  4. Affected versionversion=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <d2ab08437e913d9e4dda4dfd0d327446ec8717fc
  5. Affected versionversion=6.17

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <5994617e09ee6016c1b094f29d9c85cac944b477; version=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <9ff145a25c5c8a26b06ef7cf558fb536b18bba6d; version=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <a94309bb99eaf0c6a2ace4927864486d19458eb5; version=4dc0d12474f9d4833c3dd96b73d61e406d3f5dc7 <d2ab08437e913d9e4dda4dfd0d327446ec8717fc; version=6.17

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 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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