CVE-2026-31573

Kernel panic via freed Hantro resource data

Published Apr 24, 2026 · Updated Apr 24, 2026

Denial of service in the Linux kernel 6.19.6 through 6.19.10 allows local users to trigger a kernel panic during Hantro VPU probing. The imx8mq_vpu_shared_resources array is discarded after module initialization because __initconst places it in freed init memory, but hantro_probe later dereferences it. The driver must be built as a module, and deferred probing or unbind-bind cycles must reach the stale array; the resulting page fault crashes the host.

CVSS severity5.5
Medium
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel 6.19.6 through 6.19.10 allows local users to trigger a kernel panic during Hantro VPU probing. The imx8mq_vpu_shared_resources array is discarded after module initialization because __initconst places it in freed init memory, but hantro_probe later dereferences it. The driver must be built as a module, and deferred probing or unbind-bind cycles must reach the stale array; the resulting page fault crashes the host.

The record

CVE
CVE-2026-31573
Published
Apr 24, 2026
Updated
Apr 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Apr 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 24, 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=286d629d10640bc22f3bf46aa4f356eb7975e862 <1e7e9119cf9b0d8585b27653b1a6dc31397c252e
  2. Affected versionversion=6.19.6 <6.19.11
  3. Affected versionversion=e0203ddf9af7c8e170e1e99ce83b4dc07f0cd765 <e8d97c270cb46a2a88739019d0f8547adc7d97da

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=286d629d10640bc22f3bf46aa4f356eb7975e862 <1e7e9119cf9b0d8585b27653b1a6dc31397c252e; version=6.19.6 <6.19.11; version=e0203ddf9af7c8e170e1e99ce83b4dc07f0cd765 <e8d97c270cb46a2a88739019d0f8547adc7d97da

Published CVSS scores

5.5NIST NVDCVSS: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
Privilegesauthenticated
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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