#VU99019 Improper locking in Linux kernel - CVE-2024-49939

Vulnerability identifier: #VU99019

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-2024-49939

CWE-ID: CWE-667

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 improper locking within the rtw89_ops_add_interface() function in drivers/net/wireless/realtek/rtw89/mac80211.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/fdc73f2cfbe897f4733156df211d79ced649b23c
https://git.kernel.org/stable/c/37c319503023de49a4c87301c8998c8d928112cb
https://git.kernel.org/stable/c/490eddc836b2a6ec286e5df14bed4c7cf5e1f475
https://git.kernel.org/stable/c/7dd5d2514a8ea58f12096e888b0bd050d7eae20a

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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.