CVE-2026-74510

Kernel compromise via pairing-command cancellation race

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in Linux kernel Bluetooth management allows local users to crash or compromise the kernel via concurrent pairing commands. An unlocked pending-list lookup leaves the same mgmt_pending_cmd reachable to pairing callbacks and cancel_pair_device(), allowing one racing path to free it before the other dereferences and removes it. Reaching the race requires CAP_NET_ADMIN access to the local HCI management channel and a powered Bluetooth controller; remote Bluetooth peers cannot trigger it.

CVSS severity7.8
High
EPSS probability0.14%
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 management allows local users to crash or compromise the kernel via concurrent pairing commands. An unlocked pending-list lookup leaves the same mgmt_pending_cmd reachable to pairing callbacks and cancel_pair_device(), allowing one racing path to free it before the other dereferences and removes it. Reaching the race requires CAP_NET_ADMIN access to the local HCI management channel and a powered Bluetooth controller; remote Bluetooth peers cannot trigger it.

The record

CVE
CVE-2026-74510
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-825, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 15, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.6.39
  2. Affected versionversion=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <51be7280980fddc90ebe874a69c2fe8ab02bb46a
  3. Affected versionversion=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <7c2a152a897cd1c184b2051484d4f74d803e7f4a
  4. Affected versionversion=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <86ed4dd6548ccf277bc691bc912ca06e76b9d80c
  5. Affected versionversion=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <c569def320aa8b1fde89227e2ea96606790fd86d
  6. Affected versionversion=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.39; version=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <51be7280980fddc90ebe874a69c2fe8ab02bb46a; version=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <7c2a152a897cd1c184b2051484d4f74d803e7f4a; version=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <86ed4dd6548ccf277bc691bc912ca06e76b9d80c; version=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <c569def320aa8b1fde89227e2ea96606790fd86d; version=e9a416b5ce0c0f93819f55d34cf6882196e9c3b2 <d0a7b48ad0921bd88effaee10bf970ab1d5d0ddd

Published CVSS scores

7.8Linux Kernel CVE TeamCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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

Weakness, pattern, technique

CWE-825Expired Pointer Dereference
T1068Exploitation for Privilege Escalation

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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