CVE-2026-68391High· 7.8▾ Twilight

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use o…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score43/ 100 · Moderate

impact 42.9 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 10, 2026

Updated

Oct 3, 2026

CVSS

7.8

Vendor

Linux

Product

Linux

CWE

—

Depth score

43 · Moderate

EPSS

0.13% · p3

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 3.

0.1% → 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 77 days

Aug 10, 2026Published
Disclosed via NVD
Oct 3, 2026Record revised
Last analysed / modified upstream
Oct 3, 2026EPSS first tracked
0.1%
Oct 26, 2026EPSS peak
0.1% → 0.1%

Linux #nvd #cve.org

Affected

Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < 84674dd1d3192ecb050827d3148642609c0c9dbb
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < b56f2ecafc08f372bf0529f9c4f3f429cb1702dc
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < f915e74b6f18293d1d69a2a3305ef321ff7c0172
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < d5b3b484b62bb0f4542e7622789d28871626cdf0
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < ecdcb55ea1c01dda074406f38058785a69526734
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < da55f570191d5d72f10c607a7043b947eb05ea46
Linux 6.0

Full technical detail▾

Overview

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF.

Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid.

When accessing conn->state, ensure hdev->lock is held to avoid data race.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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CVE-2026-68391High· 7.8▾ Twilight

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score43/ 100 · Moderate

impact 42.9 · likelihood 0 · exploitation 0

⚡ Agent-ready:Raw markdown ↗JSON ↗

Proof of concept

Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.

…

Published

Aug 10, 2026

Updated

Oct 3, 2026

CVSS

7.8

Vendor

Linux

Product

Linux

CWE

—

Depth score

43 · Moderate

EPSS

0.13% · p3

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

decided 2026-10-16

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 3.

0.1% → 0.1%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

4 events · 77 days

Aug 10, 2026Published
Disclosed via NVD
Oct 3, 2026Record revised
Last analysed / modified upstream
Oct 3, 2026EPSS first tracked
0.1%
Oct 26, 2026EPSS peak
0.1% → 0.1%

Linux #nvd #cve.org

Affected

Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < 84674dd1d3192ecb050827d3148642609c0c9dbb
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < b56f2ecafc08f372bf0529f9c4f3f429cb1702dc
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < f915e74b6f18293d1d69a2a3305ef321ff7c0172
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < d5b3b484b62bb0f4542e7622789d28871626cdf0
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < ecdcb55ea1c01dda074406f38058785a69526734
Linux >= 7b445e220db9a2c58be5d09bbbd322abf1b1452a < da55f570191d5d72f10c607a7043b947eb05ea46
Linux 6.0

Full technical detail▾

Overview

In the Linux kernel, the following vulnerability has been resolved:

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

Dereferencing RCU-protected pointers outside critical sections is invalid and may lead to UAF. Use of hci_conn in hci_sync callbacks also needs to hold refcount to avoid UAF.

Take appropriate locks for hci_conn lookups, and take refcount for hci_conn pointers stored in mgmt_pending_cmd so that the pointer stays valid.

When accessing conn->state, ensure hdev->lock is held to avoid data race.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org