CVE-2026-74461

Kernel crash via stale slave timeout callback

Published Aug 15, 2026 · Updated Aug 15, 2026

A race condition in the Linux IMX I2C slave driver allows attackers to crash the kernel through a stale timer callback. The i2c_imx_unreg_slave function clears the slave pointer without first canceling a pending high-resolution timer, allowing i2c_imx_slave_finish_op to pass a NULL pointer to i2c_imx_slave_event. Triggering requires the IMX controller to operate in I2C slave mode with a pending timeout during client unregistration; the resulting use-after-free or NULL dereference interrupts the system.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A race condition in the Linux IMX I2C slave driver allows attackers to crash the kernel through a stale timer callback. The i2c_imx_unreg_slave function clears the slave pointer without first canceling a pending high-resolution timer, allowing i2c_imx_slave_finish_op to pass a NULL pointer to i2c_imx_slave_event. Triggering requires the IMX controller to operate in I2C slave mode with a pending timeout during client unregistration; the resulting use-after-free or NULL dereference interrupts the system.

The record

CVE
CVE-2026-74461
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 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=5.11
  2. Affected versionversion=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f
  3. Affected versionversion=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <753060f2b77ff2f386addbd3ecadb95b9f90cddd
  4. Affected versionversion=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <a8a1f9ac3d763e721586f15479ef9140b216ddf3
  5. Affected versionversion=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <affd62f5719a78135b7441aa49c8cab3c3b5e838
  6. Affected versionversion=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <dab4762ee7f3fd0a01980d5407ba48d0261d3bff

What conditions does exploitation require?

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

What is affected?

The Linux Kernel Organization · Linuxversion=5.11; version=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <6ac7702b6cc2b94aaed9ef2d95bfbefcdc90061f; version=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <753060f2b77ff2f386addbd3ecadb95b9f90cddd; version=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <a8a1f9ac3d763e721586f15479ef9140b216ddf3; version=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <affd62f5719a78135b7441aa49c8cab3c3b5e838; version=f7414cd6923fd7f78e57086fc964ba2dc25db5c1 <dab4762ee7f3fd0a01980d5407ba48d0261d3bff

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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