CVE-2026-72141 Linux CVE debrief

Who should care

Linux kernel maintainers, users, and administrators should be aware of this vulnerability and take necessary actions to prevent potential bus locking issues. They should prioritize patching and review Linux kernel configurations to prevent similar issues. Security teams and vulnerability management teams should also be aware of this vulnerability and monitor Linux kernel updates for potential related vulnerabilities. Additionally, operators and platform administrators should review their configurations and apply patches to prevent exploitation. This vulnerability can have a significant impact on Linux kernel deployments, and affected parties should take immediate action to mitigate the risk. Compensating controls, such as monitoring and asset inventory, can also help reduce the risk of exploitation. Linux kernel users and maintainers should work together to ensure that patches are applied and configurations are reviewed to prevent exploitation. This requires coordination and communication between different teams and stakeholders to ensure that the vulnerability is properly mitigated. By prioritizing patching and review of Linux kernel configurations, affected parties can reduce the risk of exploitation and prevent potential bus locking issues. This vulnerability highlights the importance of proactive vulnerability management and coordination between different teams and stakeholders to ensure that vulnerabilities are properly mitigated. Linux kernel users and maintainers should also review their incident response plans and ensure that they are prepared to respond to potential exploitation of this vulnerability. By taking proactive steps to mitigate the risk of exploitation, affected parties can reduce the potential impact of this vulnerability and prevent potential bus locking issues. This requires a coordinated effort between different teams and stakeholders to ensure that the vulnerability is properly mitigated and that Linux kernel deployments are secure. The vulnerability can have a significant impact on Linux kernel deployments, and affected parties should take immediate action to mitigate the risk. Linux kernel maintainers and users should prioritize patch,

Technical summary

The Linux kernel vulnerability allows for a locked bus on SMBus block-read of 0, which can cause the bus to stay stuck until a power cycle of the i2c controller. The issue is resolved by accepting count=0 and NACKing the in-flight dummy byte. This change helps prevent potential bus locking issues. The vulnerability affects Linux kernel users and maintainers, who should prioritize patching to prevent exploitation.

Defensive priority

Linux kernel maintainers and users should prioritize patching this vulnerability to prevent potential bus locking issues.

Recommended defensive actions

• Apply patches to the Linux kernel to fix the i2c: imx locked bus issue
• Review and update Linux kernel configurations to prevent similar issues
• Monitor Linux kernel updates for potential related vulnerabilities
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Evidence notes

The Linux kernel vulnerability allows for a locked bus on SMBus block-read of 0, which can cause the bus to stay stuck until a power cycle of the i2c controller. Evidence is limited, and further verification is needed. The vulnerability was resolved by accepting count=0 and NACKing the in-flight dummy byte. This change helps prevent potential bus locking issues. Linux kernel maintainers and users should verify their configurations and apply patches to prevent exploitation.

Official resources