CVE-2026-53098 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution maintainers, and users of Linux-based systems should review and apply patches. They should verify their kernel versions and check if they are within the affected range. Additionally, they should consider implementing additional monitoring and logging to detect potential exploitation attempts.

Why it matters

This vulnerability could allow an attacker to cause a system crash or potentially elevate privileges. Linux kernel developers and maintainers should review and apply patches. Linux distribution maintainers and users of Linux-based systems should verify their kernel versions and check if they are within the affected range.

• Potential system crashes or instability
• Possible elevation of privileges
• Potential data breaches or unauthorized access

Technical summary

The vulnerability exists in the mt7915_mac_dump_work() function of the Linux kernel. When the mt7915 pci chip is detaching, the mt7915_crash_data is released, but the work item dump_work may still be running or pending, leading to use-after-free bugs. The vulnerability has been resolved in the Linux kernel by ensuring dump_work is properly canceled before the crash_data is deallocated. Add cancel_work_sync() in mt7915_unregister_device() to synchronize with any pending or executing dump work. This fix prevents the use-after-free bugs and ensures the stability of the system.

Defensive priority

High

Recommended defensive actions

• Review and apply patches from the Linux kernel maintainers
• Verify the system's Linux kernel version and check if it is within the affected range
• Consider implementing additional monitoring and logging to detect potential exploitation attempts
• 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
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The CVE record and NVD vulnerability detail page provide information on the vulnerability, including its description, CVSS score, and affected versions. The Linux kernel maintainers have released patches to fix this vulnerability. Users of Linux-based systems should verify their kernel versions and check if they are within the affected range. The vulnerability has been resolved in the Linux kernel.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.