CVE-2023-53828Bluetooth: hci_sync: Avoid use-after-free in dbg for hci_add_adv_monitor()
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Deferred
- Record last updated
- Oct 15, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from b747a83690c8f53bc7a3f75899415c699b2c51aa before 81d8e9f59df63b8358751c1ffed9f1cf5c796909; from b747a83690c8f53bc7a3f75899415c699b2c51aa before aafda69d4807f5edf3558c9534be9b911774e63a; from b747a83690c8f53bc7a3f75899415c699b2c51aa before 8d66f7ced51cb924bc90278d6a0a26a52877271a; from b747a83690c8f53bc7a3f75899415c699b2c51aa before a2bcd2b63271a93a695fabbfbf459c603d956d48 | CNA record |
References
- https://git.kernel.org/stable/c/81d8e9f59df63b8358751c1ffed9f1cf5c796909
- https://git.kernel.org/stable/c/aafda69d4807f5edf3558c9534be9b911774e63a
- https://git.kernel.org/stable/c/8d66f7ced51cb924bc90278d6a0a26a52877271a
- https://git.kernel.org/stable/c/a2bcd2b63271a93a695fabbfbf459c603d956d48
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.