#VU102926 NULL pointer dereference in Linux kernel - CVE-2024-48873

Vulnerability identifier: #VU102926

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-2024-48873

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 rtw89_update_6ghz_rnr_chan() function in drivers/net/wireless/realtek/rtw89/fw.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/1a0f54cb3fea5d087440b2bae03202c445156a8d
https://git.kernel.org/stable/c/630d5d8f2bf6b340202b6bc2c05d794bbd8e4c1c
https://git.kernel.org/stable/c/7296e5611adb2c619bd7bd3817ddde7ba865ef17

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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.