CVE-2026-100076 Linux CVE debrief

Who should care

Linux kernel maintainers, system administrators, and security teams responsible for managing Linux-based systems using the rtl8723bs driver. These stakeholders should assess exposure and apply patches promptly to prevent potential denial-of-service conditions. Additionally, security teams should review system logs for potential denial-of-service conditions and monitor system configurations and kernel versions.

Why it matters

This vulnerability in the Linux kernel's rtl8723bs driver can cause memory leaks on error paths, potentially leading to denial-of-service conditions and disrupting network operations. Linux kernel maintainers, system administrators, and security teams should assess exposure and apply patches promptly.

• Potential denial-of-service conditions due to management-TX pool exhaustion.
• Disruption of network operations, particularly for systems relying on the rtl8723bs driver.

Technical summary

The Linux kernel's rtl8723bs driver has a vulnerability that can cause memory leaks on error paths when handling management frames. This can lead to exhaustion of management-TX pools, potentially disrupting network operations. The vulnerability exists due to incorrect handling of management frames in the rtl8723bs driver, which can cause memory leaks and lead to denial-of-service conditions. The vulnerability can be triggered by sending malformed management frames to the affected system. There is no evidence of public exploitation, but defenders should verify system logs

Defensive priority

Assess exposure and apply patches promptly to prevent potential denial-of-service conditions.

Recommended defensive actions

• Assess exposure by reviewing system configurations and kernel versions.
• Apply patches or updates provided by the Linux kernel maintainers.
• Monitor system logs for potential denial-of-service conditions.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• 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.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information on affected systems and exploitation is limited. The vulnerability was introduced in the Linux kernel's rtl8723bs driver, which is used for managing RTL8723BS chipsets. The driver does not properly handle management frames, leading to memory leaks on error paths. The vulnerability can be triggered by sending malformed management frames to the affected system. There is no evidence of public exploitation, but defenders should verify system logs

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.