CVE-2026-74529

Kernel memory corruption via unreferenced PA sync connection

Published Aug 15, 2026 · Updated Aug 15, 2026

Use-after-free in Linux kernel Bluetooth hci_sync 6.15 through 7.1.7 allows local users to corrupt kernel memory via PA sync teardown. hci_connect_pa_sync queues asynchronous work with a raw hci_conn pointer, allowing teardown to free the object before create_pa_complete dereferences it. The affected 6.12 line starts at 6.12.28 and the 6.14 line at 6.14.6; unprivileged Bluetooth ISO socket access and a successful teardown race can crash the host or enable kernel privilege escalation.

CVSS severity7.8
High
EPSS probability0.12%
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 hci_sync 6.15 through 7.1.7 allows local users to corrupt kernel memory via PA sync teardown. hci_connect_pa_sync queues asynchronous work with a raw hci_conn pointer, allowing teardown to free the object before create_pa_complete dereferences it. The affected 6.12 line starts at 6.12.28 and the 6.14 line at 6.14.6; unprivileged Bluetooth ISO socket access and a successful teardown race can crash the host or enable kernel privilege escalation.

The record

CVE
CVE-2026-74529
Published
Aug 15, 2026
Updated
Aug 15, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-416, 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

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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=6.12.28 <6.13
  2. Affected versionversion=6.14.6 <6.15
  3. Affected versionversion=6.15
  4. Affected versionversion=6d0417e4e1cf66fd917f06f0454958362714ef7d <44fc74069d8988f2825246f9401218e29de2c0ab
  5. Affected versionversion=6d0417e4e1cf66fd917f06f0454958362714ef7d <c53c70ec289ee12f20c4f1b2fbfd151762c01f67
  6. Affected versionversion=94bf6380e936339a700c0b3171a49baf512aa70b
  7. Affected versionversion=eb8b860e87b296bd1874c79a668081efd00f9754

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.12.28 <6.13; version=6.14.6 <6.15; version=6.15; version=6d0417e4e1cf66fd917f06f0454958362714ef7d <44fc74069d8988f2825246f9401218e29de2c0ab; version=6d0417e4e1cf66fd917f06f0454958362714ef7d <c53c70ec289ee12f20c4f1b2fbfd151762c01f67; version=94bf6380e936339a700c0b3171a49baf512aa70b; version=eb8b860e87b296bd1874c79a668081efd00f9754

Published CVSS scores

4.7Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8CVE record ADP enrichmentCVSS: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

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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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-416Use After Free
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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