#VU102147 NULL pointer dereference in Linux kernel - CVE-2024-56535

Vulnerability identifier: #VU102147

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-2024-56535

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 btc_fw_set_monreg() function in drivers/net/wireless/realtek/rtw89/coex.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/051577414271961f3f4c3bff87b427924b486219
https://git.kernel.org/stable/c/64db1a42d98307001a48cec1b3e68ce9f905e73d
https://git.kernel.org/stable/c/81df5ed446b448bdc327b7c7f0b50121fc1f4aa2

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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.