NULL pointer dereference in Linux kernel bluetooth driver

1) NULL pointer dereference

EUVDB-ID: #VU97526

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-46749

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

The vulnerability allows a local user to perform a denial of service (DoS) attack.

The vulnerability exists due to NULL pointer dereference within the btnxpuart_close() and btnxpuart_flush() functions in drivers/bluetooth/btnxpuart.c. A local user can perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Linux kernel: All versions

External links

http://git.kernel.org/stable/c/013dae4735d2010544d1f2121bdeb8e6c9ea171e
http://git.kernel.org/stable/c/056e0cd381d59a9124b7c43dd715e15f56a11635
http://git.kernel.org/stable/c/c68bbf5e334b35b36ac5b9f0419f1f93f796bad1

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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