#VU93405 Buffer overflow in Linux kernel - CVE-2021-47172

Vulnerability identifier: #VU93405

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-2021-47172

CWE-ID: CWE-119

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 memory corruption within the ad7124_of_parse_channel_config() function in drivers/iio/adc/ad7124.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/f49149964d2423fb618fb6b755bb1eaa431cca2c
https://git.kernel.org/stable/c/f70122825076117787b91e7f219e21c09f11a5b9
https://git.kernel.org/stable/c/26da8040eccc6c6b0e415e9a3baf72fd39eb2fdc
https://git.kernel.org/stable/c/f2a772c51206b0c3f262e4f6a3812c89a650191b

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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.