CVE-2026-43018CWE-416

CVE-2026-43018

High · published May 1, 2026

CVSS v3.1
8.8
EPSS
0%
Percentile
33.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.8 · HIGH
Vector
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00403 · 33.4th percentile
Weakness
CWE-416 · Use After Free
Published
2026-05-01T19:16Z
Affected products (11)
ProductVersionsFixed in
linux/linux_kernel≥ 5.17, < 6.1.1686.1.168
linux/linux_kernel≥ 6.2, < 6.6.1346.6.134
linux/linux_kernel≥ 6.7, < 6.12.816.12.81
linux/linux_kernel≥ 6.13, < 6.18.226.18.22
linux/linux_kernel≥ 6.19, < 6.19.126.19.12
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
linux/linux_kernelall versions—
References (6)
https://git.kernel.org/stable/c/1d0bdbfe3e91c11f0a704c52443a9446a10d699c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/59eecf0ffde15670e6a5e10c47be67f73d843b20 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/5fb69e1eeea9d6cba80517e9f058b56b34bc3a81 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/7cadb03be37e761130edb153544fe0770a842b19 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/b255531b27da336571411248c2a72a350662bd09 · 416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ea3cd36d7382d5f8309df04c275d20df139ed42c · 416baaa9-dc9f-4396-8d5f-8c081fb06d67
EPSS history
Timeline
  • 01 MAY 14:15Z
    Bluetooth: hci_event: fix potential UAF in hci_le_remote_conn_param_req_evt
    cvelistv5