CVE-2026-80760Hinoki check available

Bluetooth controller stream desynchronization via length truncation

Published Sep 4, 2026 · Updated Sep 4, 2026

Improper length validation in Linux allows attackers to desynchronize Bluetooth HCI framing through an oversized HCI_CMD_SYNC request. mgmt_hci_cmd_sync() accepts a 16-bit params_len above 255, while hci_cmd_sync_alloc() truncates it into the 8-bit HCI plen field but still appends every parameter byte. Access to the local Bluetooth management socket and a length-framed transport such as H:4 is required; the controller treats trailing bytes as another packet, while further impact is undisclosed.

CVSS severityUnavailable
Unscored
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper length validation in Linux allows attackers to desynchronize Bluetooth HCI framing through an oversized HCI_CMD_SYNC request. mgmt_hci_cmd_sync() accepts a 16-bit params_len above 255, while hci_cmd_sync_alloc() truncates it into the 8-bit HCI plen field but still appends every parameter byte. Access to the local Bluetooth management socket and a length-framed transport such as H:4 is required; the controller treats trailing bytes as another packet, while further impact is undisclosed.

The record

CVE
CVE-2026-80760
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.13
  2. Affected versionversion=827af4787e74e8df9e8e0677a69fbb15e0856d2f <0bd0195ce25737cbdd0eabc54319ee0ddf3a0ad2
  3. Affected versionversion=827af4787e74e8df9e8e0677a69fbb15e0856d2f <5d95286b6d6e8f1d304da7522bfa6860fc017e48
  4. Affected versionversion=827af4787e74e8df9e8e0677a69fbb15e0856d2f <6e1c44878aa3ee7336efeaf01414b030b0a5c273
  5. Affected versionversion=827af4787e74e8df9e8e0677a69fbb15e0856d2f <b7d9edcf9fe6e9ec3a2e80ef9e8d44ef9b4f2894

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=6.13; version=827af4787e74e8df9e8e0677a69fbb15e0856d2f <0bd0195ce25737cbdd0eabc54319ee0ddf3a0ad2; version=827af4787e74e8df9e8e0677a69fbb15e0856d2f <5d95286b6d6e8f1d304da7522bfa6860fc017e48; version=827af4787e74e8df9e8e0677a69fbb15e0856d2f <6e1c44878aa3ee7336efeaf01414b030b0a5c273; version=827af4787e74e8df9e8e0677a69fbb15e0856d2f <b7d9edcf9fe6e9ec3a2e80ef9e8d44ef9b4f2894

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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