CVE-2026-43018
Description
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt hci_conn lookup and field access must be covered by hdev lock in hci_le_remote_conn_param_req_evt, otherwise it's possible it is freed concurrently. Extend the hci_dev_lock critical section to cover all conn usage.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2026-43018
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2026-43018.html
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20
Vendor advisory: 416baaa9-dc9f-4396-8d5f-8c081fb06d67 — https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| sles | affected | | |
| debian | bookworm | fixed | 6.1.170-1 |
| debian | bullseye | fixed | 0 |
| debian | forky | fixed | 6.19.12-1 |
| debian | sid | fixed | 6.19.12-1 |
| debian | trixie | fixed | 6.12.85-1 |
| linux-kernel | affected | 6.1.168 | |
| linux-kernel | 7.0 | affected | |
References
- 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
- https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09
- https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c
- https://www.suse.com/security/cve/CVE-2026-43018.html
- https://security-tracker.debian.org/tracker/CVE-2026-43018
CWEs
CWE-416
Verify integrity in audit chain (admin only). AS-IS.