CVE-2026-80692

Unspecified impact via Bluetooth connection use-after-free

Published Aug 28, 2026 · Updated Aug 28, 2026

Use-after-free in Linux kernel Bluetooth connection setup allows attackers to trigger unspecified impact during asynchronous HCI handling. The hci_connect_acl and hci_connect_le callbacks queue an hci_conn pointer without holding a reference, so the hci_sync task can dereference it after the connection is freed. Reachability requires the connection object to be released while its queued task is still running; the published patch calls the condition theoretical and establishes no practical consequence.

CVSS severityUnavailable
Unscored
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in Linux kernel Bluetooth connection setup allows attackers to trigger unspecified impact during asynchronous HCI handling. The hci_connect_acl and hci_connect_le callbacks queue an hci_conn pointer without holding a reference, so the hci_sync task can dereference it after the connection is freed. Reachability requires the connection object to be released while its queued task is still running; the published patch calls the condition theoretical and establishes no practical consequence.

The record

CVE
CVE-2026-80692
Published
Aug 28, 2026
Updated
Aug 28, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Aug 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=5dd0bd277a0a936708a33ecc447dce77a08cbde6
  2. Affected versionversion=6.6.51 <6.7
  3. Affected versionversion=6.8.9 <6.9
  4. Affected versionversion=6.9
  5. Affected versionversion=881559af5f5c545f6828e7c74d79813eb886d523 <2f5d635ad5906b0235bc0c870e8beba3116e1e98
  6. Affected versionversion=881559af5f5c545f6828e7c74d79813eb886d523 <9a77f296aff4b2ca5f2928ab3a3220c82d8b4074
  7. Affected versionversion=d948e1ffa1d40240d5c81af6dcbcb87b39cb8d3c

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=5dd0bd277a0a936708a33ecc447dce77a08cbde6; version=6.6.51 <6.7; version=6.8.9 <6.9; version=6.9; version=881559af5f5c545f6828e7c74d79813eb886d523 <2f5d635ad5906b0235bc0c870e8beba3116e1e98; version=881559af5f5c545f6828e7c74d79813eb886d523 <9a77f296aff4b2ca5f2928ab3a3220c82d8b4074; version=d948e1ffa1d40240d5c81af6dcbcb87b39cb8d3c

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

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
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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