CVE-2026-68391
Bluetooth: mgmt: hold reference for hci_conn in mgmt_pending_cmds
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.
INFO
Published Date :
Aug. 10, 2026, 1:20 p.m.
Last Modified :
Aug. 10, 2026, 1:20 p.m.
Remotely Exploit :
No
Source :
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Affected Products
The following products are affected by CVE-2026-68391
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Apply relevant Linux kernel patches.
- Ensure hdev->lock is held for conn->state access.
- Manage refcounts for hci_conn pointers.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-68391.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-68391 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-68391
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-68391 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-68391 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by 416baaa9-dc9f-4396-8d5f-8c081fb06d67
Aug. 10, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '7b445e220db9a2c58be5d09bbbd322abf1b1452a', 'lessThan': 'b56f2ecafc08f372bf0529f9c4f3f429cb1702dc', 'versionType': 'git'}, {'status': 'affected', 'version': '7b445e220db9a2c58be5d09bbbd322abf1b1452a', 'lessThan': 'f915e74b6f18293d1d69a2a3305ef321ff7c0172', 'versionType': 'git'}, {'status': 'affected', 'version': '7b445e220db9a2c58be5d09bbbd322abf1b1452a', 'lessThan': 'd5b3b484b62bb0f4542e7622789d28871626cdf0', 'versionType': 'git'}, {'status': 'affected', 'version': '7b445e220db9a2c58be5d09bbbd322abf1b1452a', 'lessThan': 'ecdcb55ea1c01dda074406f38058785a69526734', 'versionType': 'git'}, {'status': 'affected', 'version': '7b445e220db9a2c58be5d09bbbd322abf1b1452a', 'lessThan': 'da55f570191d5d72f10c607a7043b947eb05ea46', 'versionType': 'git'}], 'programFiles': ['net/bluetooth/mgmt.c'], 'defaultStatus': 'unaffected'}, {'repo': 'https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git', 'vendor': 'Linux', 'product': 'Linux', 'versions': [{'status': 'affected', 'version': '6.0'}, {'status': 'unaffected', 'version': '0', 'lessThan': '6.0', 'versionType': 'semver'}, {'status': 'unaffected', 'version': '6.6.148', 'versionType': 'semver', 'lessThanOrEqual': '6.6.*'}, {'status': 'unaffected', 'version': '6.12.101', 'versionType': 'semver', 'lessThanOrEqual': '6.12.*'}, {'status': 'unaffected', 'version': '6.18.42', 'versionType': 'semver', 'lessThanOrEqual': '6.18.*'}, {'status': 'unaffected', 'version': '7.1.6', 'versionType': 'semver', 'lessThanOrEqual': '7.1.*'}, {'status': 'unaffected', 'version': '7.2-rc4', 'versionType': 'original_commit_for_fix', 'lessThanOrEqual': '*'}], 'programFiles': ['net/bluetooth/mgmt.c'], 'defaultStatus': 'affected'}] Added 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. Added Reference https://git.kernel.org/stable/c/b56f2ecafc08f372bf0529f9c4f3f429cb1702dc Added Reference https://git.kernel.org/stable/c/d5b3b484b62bb0f4542e7622789d28871626cdf0 Added Reference https://git.kernel.org/stable/c/da55f570191d5d72f10c607a7043b947eb05ea46 Added Reference https://git.kernel.org/stable/c/ecdcb55ea1c01dda074406f38058785a69526734 Added Reference https://git.kernel.org/stable/c/f915e74b6f18293d1d69a2a3305ef321ff7c0172