#VU97526 NULL pointer dereference in Linux kernel - CVE-2024-46749

Vulnerability identifier: #VU97526

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-46749

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 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

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External links
https://git.kernel.org/stable/c/013dae4735d2010544d1f2121bdeb8e6c9ea171e
https://git.kernel.org/stable/c/056e0cd381d59a9124b7c43dd715e15f56a11635
https://git.kernel.org/stable/c/c68bbf5e334b35b36ac5b9f0419f1f93f796bad1

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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.