CVE-2026-43018

EUVD-2026-26617
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
8.8 HIGH
ADJACENT_NETWORK
LOW
NONE
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 16%
Affected Products (NVD)
VendorProductVersion
linuxlinux_kernel
5.17 ≤
𝑥
< 6.1.168
linuxlinux_kernel
6.2 ≤
𝑥
< 6.6.134
linuxlinux_kernel
6.7 ≤
𝑥
< 6.12.81
linuxlinux_kernel
6.13 ≤
𝑥
< 6.18.22
linuxlinux_kernel
6.19 ≤
𝑥
< 6.19.12
linuxlinux_kernel
7.0:rc1
linuxlinux_kernel
7.0:rc2
linuxlinux_kernel
7.0:rc3
linuxlinux_kernel
7.0:rc4
linuxlinux_kernel
7.0:rc5
linuxlinux_kernel
7.0:rc6
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
linux
bookworm
6.1.170-3
fixed
bookworm (security)
6.1.174-1
fixed
bullseye
5.10.223-1
fixed
bullseye (security)
5.10.257-1
fixed
forky
7.0.10-1
fixed
sid
7.0.12-2
fixed
trixie
6.12.86-1
fixed
trixie (security)
6.12.90-2
fixed
linux-6.1
bullseye (security)
6.1.174-1~deb11u1
fixed
Common Weakness Enumeration
Vulnerability Media Exposure
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