CVE-2026-68085

Kernel crash via Bluetooth teardown race

Published Aug 10, 2026 · Updated Aug 10, 2026

Memory corruption in the Linux kernel Bluetooth HCI UART driver allows local users to hang device writes or crash the kernel. The teardown path cancels write_work without clearing HCI_UART_SENDING, while concurrent queue flushing can race over tx_skb and cause a double free or use-after-free. Exploitation requires control of Bluetooth HCI traffic and CAP_NET_ADMIN for adapter reset or close operations; consequences include persistent transmission failure and kernel-memory corruption.

CVSS severity8.0
High
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in the Linux kernel Bluetooth HCI UART driver allows local users to hang device writes or crash the kernel. The teardown path cancels write_work without clearing HCI_UART_SENDING, while concurrent queue flushing can race over tx_skb and cause a double free or use-after-free. Exploitation requires control of Bluetooth HCI traffic and CAP_NET_ADMIN for adapter reset or close operations; consequences include persistent transmission failure and kernel-memory corruption.

The record

CVE
CVE-2026-68085
Published
Aug 10, 2026
Updated
Aug 10, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-413, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 10, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 10, 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=192cb0f1ca706d9a1bc36ae0ad5f666d1e4fd894 <b9dd39cf1667e378b25a082ca796d495d578c5d3
  2. Affected versionversion=5.10.258 <5.11
  3. Affected versionversion=5.15.209 <5.16
  4. Affected versionversion=6.1.175 <6.2
  5. Affected versionversion=6.12.92 <6.12.96
  6. Affected versionversion=6.18.34 <6.18.39
  7. Affected versionversion=6.6.142 <6.7
  8. Affected versionversion=7.0.11 <7.1
  9. Affected versionversion=7.1
  10. Affected versionversion=7338031946bd06f6dff149e67b60c4cd083bfea8
  11. Affected versionversion=78aad93e938f013d9272fe0ee168f27883afa95c
  12. Affected versionversion=81c7a3c22a0f2808cf4ae0b4908f59763b23606d <d52446b3e735cfdbdc2a58342163803bc2e64249
  13. Affected versionversion=9d20d48be2c4a071fb015eb09bda2cecd25daf34
  14. Affected versionversion=c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b <1b0d946d6f08bd39211385bc703a440911b41e46
  15. Affected versionversion=c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b <714d861d35d937f23375a4517569b13917bbbe51
  16. Affected versionversion=c85cff648a2bc92322912db5f1727ad05afae7b6
  17. Affected versionversion=e2d19969c8d9198ecc3090bcd5312ecd503a3339

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=192cb0f1ca706d9a1bc36ae0ad5f666d1e4fd894 <b9dd39cf1667e378b25a082ca796d495d578c5d3; version=5.10.258 <5.11; version=5.15.209 <5.16; version=6.1.175 <6.2; version=6.12.92 <6.12.96; version=6.18.34 <6.18.39; version=6.6.142 <6.7; version=7.0.11 <7.1; version=7.1; version=7338031946bd06f6dff149e67b60c4cd083bfea8; version=78aad93e938f013d9272fe0ee168f27883afa95c; version=81c7a3c22a0f2808cf4ae0b4908f59763b23606d <d52446b3e735cfdbdc2a58342163803bc2e64249; version=9d20d48be2c4a071fb015eb09bda2cecd25daf34; version=c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b <1b0d946d6f08bd39211385bc703a440911b41e46; version=c1bb9336ae6b54a5f6a353c4bd4ed9a4307e429b <714d861d35d937f23375a4517569b13917bbbe51; version=c85cff648a2bc92322912db5f1727ad05afae7b6; version=e2d19969c8d9198ecc3090bcd5312ecd503a3339

Published CVSS scores

2.5Amazon LinuxCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
5.5Red HatCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
8.0Linux CVE recordCVSS:3.1/AV:A/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-413Improper Resource Locking
T1499Endpoint Denial of Service

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo