The vulnerability of the l2cap_data_channel() function in the net/bluetooth/l2cap_core.c module of the Linux kernel’s Bluetooth subsystem allows a attacker to compromise the confidentiality, integrity, and accessibility of the protected information.

🗓️ 13 Jul 2026 00:00:00Reported by FSTEC of Russia — Information Security Threat DatabaseType

The l2cap_data_channel function in net/bluetooth/l2cap_core.c in the Linux kernel Bluetooth subsystem is vulnerable due to reuse of freed memory, risking confidentiality, integrity, and accessibility.

Reporter	Title	Published	Views	Family All 220
Tenable Nessus	Amazon Linux 2 : kernel, --advisory ALAS2-2022-1888 (ALAS-2022-1888)	7 Dec 202200:00	–	nessus
Tenable Nessus	Ubuntu 14.04 LTS / 16.04 LTS : Linux kernel vulnerabilities (USN-7607-1)	2 Jul 202500:00	–	nessus
Tenable Nessus	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-986436)	7 Oct 202500:00	–	nessus
Tenable Nessus	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-986639)	7 Oct 202500:00	–	nessus
Tenable Nessus	Unity Linux 20.1070e Security Update: kernel (UTSA-2025-987175)	7 Oct 202500:00	–	nessus
Tenable Nessus	Unity Linux 20.1070a Security Update: kernel (UTSA-2025-988657)	5 Nov 202500:00	–	nessus
Tenable Nessus	Linux Distros Unpatched Vulnerability : CVE-2022-49909	9 Aug 202500:00	–	nessus
Amazon	Important: kernel	6 Dec 202200:00	–	amazon
AstraLinux	Astra Linux - уязвимость в linux-5.10, linux	31 Oct 202516:38	–	astralinux
CNNVD	编号撤回	1 May 202500:00	–	cnnvd

Source	Link
git	www.git.kernel.org/stable/c/8f7e4cf0694149a5d999d676ebd9ecf1b4cb2cc9
git	www.git.kernel.org/stable/c/db4a0783ed78beb2ebaa32f5f785bfd79c580689
git	www.git.kernel.org/stable/c/7f7bfdd9a9af3b12c33d9da9a012e7f4d5c91f4b
git	www.git.kernel.org/stable/c/c1f594dddd9ffd747c39f49cc5b67a9b7677d2ab
git	www.git.kernel.org/stable/c/d9ec6e2fbd4a565b2345d4852f586b7ae3ab41fd
git	www.git.kernel.org/stable/c/a3a7b2ac64de232edb67279e804932cb42f0b52a
git	www.git.kernel.org/stable/c/17c6164854f8bb80bf76f32b2c2f199c16b53703
cve	www.cve.org/CVERecord
git	www.git.kernel.org/linus/0d0e2d032811280b927650ff3c15fe5020e82533
kernel	www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.9.333

13 Jul 2026 00:00Current

6.6Medium risk

Vulners AI Score6.6

CVSS 26.8

CVSS 37.8

EPSS0.00024