Denial of service in Linux kernel BlueZ

1) NULL pointer dereference

EUVDB-ID: #VU71644

Risk: Low

CVSSv3.1: 4 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-3563

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows an attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the read_50_controller_cap_complete() function in tools/mgmt-tester.c of the component BlueZ. An attacker with physical proximity to device can send specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://vuldb.com/?id.211086
http://git.kernel.org/pub/scm/bluetooth/bluez.git/commit/?id=e3c92f1f786f0b55440bd908b55894d0c792cf0e

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.