CVE-2026-80616
Received Received - Intake

ieee802154 NetNS Switch Avoids WARN_ON on Allocation Failure

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: ieee802154: Avoid calling WARN_ON() on -ENOMEM in cfg802154_switch_netns() It's pointless to call WARN_ON() in case of an allocation failure in dev_change_net_namespace() and device_rename(), since it only leads to useless splats caused by deliberate fault injections, so avoid it. Found by Linux Verification Center (linuxtesting.org) with Syzkaller.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-09-17
AI Q&A
2026-08-28
EPSS Evaluated
2026-09-15
NVD
CVE-2026-80616
EUVD
EUVD-2026-67492

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

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Exploitability

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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This vulnerability in the Linux kernel involves an unnecessary call to WARN_ON() when memory allocation fails in the ieee802154 subsystem. The issue occurs during network namespace switching, where triggering a warning on allocation failure (-ENOMEM) creates unnecessary system logs without providing useful diagnostic value.

Detection Guidance

This vulnerability is specific to the Linux kernel's ieee802154 subsystem and involves a WARN_ON() call during network namespace switching. Detection requires checking kernel logs for WARN_ON() splats related to ieee802154 or network namespace operations. No direct commands are provided, but monitoring kernel logs for warnings during network operations may help.

Impact Analysis

This vulnerability primarily affects system stability by generating excessive and unhelpful warning messages during memory allocation failures. It does not directly compromise security or data integrity but may clutter system logs and potentially obscure more critical issues.

Compliance Impact

This vulnerability does not directly affect compliance with standards like GDPR or HIPAA as it is a Linux kernel issue related to memory allocation failure handling in the ieee802154 subsystem. No evidence suggests it impacts data protection or privacy requirements.

Mitigation Strategies

Update the Linux kernel to the latest stable version where this vulnerability is resolved. Avoid manual workarounds as this issue is addressed in upstream kernel patches. Monitor kernel logs for related warnings after updating.

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