Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds (CVE-2026-68391) | HOL Guard CVE

High · CVSS 7.8CVE-2026-68391

Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds

Answer in brief

CVE-2026-68391 records a High severity (CVSS 7.8) vulnerability in Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 10, 2026Updated Aug 17, 2026Source checked Sep 24, 2026First seen by HOL Aug 10, 2026Material review Aug 17, 2026

Upstream Advisory

Key facts

Risk: High · CVSS 7.8
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=7b445e220db9a2c58be5d09bbbd322abf1b1452a <b56f2ecafc08f372bf0529f9c4f3f429cb1702dc \|\| >=7b445e220db9a2c58be5d09bbbd322abf1b1452a <f915e74b6f18293d1d69a2a3305ef321ff7c0172 \|\| >=7b445e220db9a2c58be5d09bbbd322abf1b1452a <d5b3b484b62bb0f4542e7622789d28871626cdf0 \|\| >=7b445e220db9a2c58be5d09bbbd322abf1b1452a <ecdcb55ea1c01dda074406f38058785a69526734 \|\| >=7b445e220db9a2c58be5d09bbbd322abf1b1452a <da55f570191d5d72f10c607a7043b947eb05ea46	b56f2ecafc08f372bf0529f9c4f3f429cb1702dc, f915e74b6f18293d1d69a2a3305ef321ff7c0172, d5b3b484b62bb0f4542e7622789d28871626cdf0, ecdcb55ea1c01dda074406f38058785a69526734, da55f570191d5d72f10c607a7043b947eb05ea46
Linux/Linuxgeneric	6.0	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to b56f2ecafc08f372bf0529f9c4f3f429cb1702dc if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 17, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 10, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.