Vulnerability identifier: #VU90352

Vulnerability risk: Low

CVSSv3.1: 4.8 [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-2021-47065

CWE-ID: CWE-125

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 an out-of-bounds read error within the rtw_phy_load_tables(), rtw_get_channel_group() and rtw_get_tx_power_params() functions in drivers/net/wireless/realtek/rtw88/phy.c. A local user can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Linux kernel:

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External links
http://git.kernel.org/stable/c/6b5aa0cf321c25f41e09a61c83ee4dc7ab9549cb
http://git.kernel.org/stable/c/95fb153c6027924cda3422120169d1890737f3a0
http://git.kernel.org/stable/c/5f3dbced8eaa5c9ed7d6943f3fea99f235a6516a
http://git.kernel.org/stable/c/9cd09722e18a08b6a3d68b8bccfac39ddc22434c
http://git.kernel.org/stable/c/2ff25985ea9ccc6c9af2c77b0b49045adcc62e0e

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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.