#VU71644 NULL pointer dereference in Linux kernel - CVE-2022-3563

Vulnerability identifier: #VU71644

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-3563

CWE-ID: CWE-476

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

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

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

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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.