CVE-2023-53828
Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()
CVSS Score
7.8
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor() KSAN reports use-after-free in hci_add_adv_monitor(). While adding an adv monitor, hci_add_adv_monitor() calls -> msft_add_monitor_pattern() calls -> msft_add_monitor_sync() calls -> msft_le_monitor_advertisement_cb() calls in an error case -> hci_free_adv_monitor() which frees the *moniter. This is referenced by bt_dev_dbg() in hci_add_adv_monitor(). Fix the bt_dev_dbg() by using handle instead of monitor->handle.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 9, 2025 |
| Last Updated | Aug 5, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Affected Versions
Linux / Linux
b747a83690c8f53bc7a3f75899415c699b2c51aa < 81d8e9f59df63b8358751c1ffed9f1cf5c796909 b747a83690c8f53bc7a3f75899415c699b2c51aa < aafda69d4807f5edf3558c9534be9b911774e63a b747a83690c8f53bc7a3f75899415c699b2c51aa < 8d66f7ced51cb924bc90278d6a0a26a52877271a b747a83690c8f53bc7a3f75899415c699b2c51aa < a2bcd2b63271a93a695fabbfbf459c603d956d48
Linux / Linux
6.0
References
git.kernel.org: https://git.kernel.org/stable/c/81d8e9f59df63b8358751c1ffed9f1cf5c796909 git.kernel.org: https://git.kernel.org/stable/c/aafda69d4807f5edf3558c9534be9b911774e63a git.kernel.org: https://git.kernel.org/stable/c/8d66f7ced51cb924bc90278d6a0a26a52877271a git.kernel.org: https://git.kernel.org/stable/c/a2bcd2b63271a93a695fabbfbf459c603d956d48