CVE-2026-43018 - Vulnerability Analysis
HighCVSS: 8.8Last Updated: May 3, 2026
Linux Kernel - Use After Free
Published: May 1, 2026Updated: May 3, 2026
Overview
Linux kernel contains a use-after-free caused by improper locking in hci_le_remote_conn_param_req_evt, letting attackers cause memory corruption or denial of service, exploit requires concurrent access to Bluetooth HCI events.
Severity & Score
Severity: High
CVSS Score: 8.8
Impact
Attackers can cause memory corruption or denial of service via use-after-free in Bluetooth HCI event handling.
Mitigation
Update to the latest Linux kernel version with the hci_dev_lock fix.
References
- https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09
- https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c
- https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c
- https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20
- https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81
- https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19
Related Resources
Details
- CVE ID
- CVE-2026-43018
- Severity
- High
- CVSS Score
- 8.8
- Type
- use_after_free
- Status
- unconfirmed
CVSS Metrics
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H