CVE-2026-68391
High
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.
SeverityHigh
CVSS7.8
Exploit probability—
Product
Linux
PublishedAug 10, 2026
First seenAug 10, 2026
Weakness typeCWE-416Use after free
How to fix
Update
- Linux Linux84674dd1d3192ecb050827d3148642609c0c9dbb, b56f2ecafc08f372bf0529f9c4f3f429cb1702dc, f915e74b6f18293d1d69a2a3305ef321ff7c0172, d5b3b484b62bb0f4542e7622789d28871626cdf0, ecdcb55ea1c01dda074406f38058785a69526734, da55f570191d5d72f10c607a7043b947eb05ea46 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < 84674dd1d3192ecb050827d3148642609c0c9dbb, 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < b56f2ecafc08f372bf0529f9c4f3f429cb1702dc, 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < f915e74b6f18293d1d69a2a3305ef321ff7c0172, 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < d5b3b484b62bb0f4542e7622789d28871626cdf0, 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < ecdcb55ea1c01dda074406f38058785a69526734, 7b445e220db9a2c58be5d09bbbd322abf1b1452a ≤ v < da55f570191d5d72f10c607a7043b947eb05ea46, 6.0 | 84674dd1d3192ecb050827d3148642609c0c9dbb, b56f2ecafc08f372bf0529f9c4f3f429cb1702dc, f915e74b6f18293d1d69a2a3305ef321ff7c0172, d5b3b484b62bb0f4542e7622789d28871626cdf0, ecdcb55ea1c01dda074406f38058785a69526734, da55f570191d5d72f10c607a7043b947eb05ea46 |
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