CVE-2026-80186 Red Hat CVE debrief

Who should care

Defenders responsible for managing Bluetooth-enabled devices, especially those within the radio range of potential attackers, should assess exposure and potential impact. This includes operators, platform administrators, vulnerability management teams, and security teams who need to prioritize verifying exposure and assessing potential impact on Bluetooth-enabled devices.

Why it matters

Defenders should prioritize verifying exposure and assessing potential impact on Bluetooth-enabled devices, especially those within the radio range of potential attackers, due to the risk of Denial of Service and potential code execution.

• Denial of Service (DoS) by crashing the bluetoothd service
• Potential arbitrary code execution
• Verification of exposure and impact on Bluetooth-enabled devices
• Prioritization of patching or updating affected systems

Technical summary

A stack-based buffer overflow vulnerability exists in BlueZ, the Linux Bluetooth protocol stack. A remote user within Bluetooth radio range can send a specially crafted Extended Inquiry Response (EIR) packet that causes a buffer overflow when the target device performs Bluetooth discovery. This vulnerability can lead to a Denial of Service (DoS) by crashing the bluetoothd service and may allow for arbitrary code execution. The vulnerability affects BlueZ and potentially impacts Bluetooth-enabled devices, especially those within the radio range of potential attackers.

Defensive priority

Defenders should prioritize verifying exposure and assessing potential impact on Bluetooth-enabled devices, especially those within the radio range of potential attackers.

Recommended defensive actions

• Verify exposure of Bluetooth-enabled devices within the organization
• Assess potential impact on devices running Red Hat Enterprise Linux 6, 7, 8, 9, and 10
• Monitor Bluetooth device activity for suspicious EIR packets
• Apply patches or updates provided by the vendor once available
• 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

Evidence notes

The CVE record and source item provide details on the vulnerability, its potential impact, and affected products. However, specific versions of Red Hat Enterprise Linux affected by this vulnerability are not provided in the source corpus.

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.