#VU93688 Input validation error in Linux kernel - CVE-2021-47210

Vulnerability identifier: #VU93688

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-2021-47210

CWE-ID: CWE-20

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 input validation within the tps6598x_block_read() function in drivers/usb/typec/tps6598x.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/2a897d384513ba7f7ef05611338b9a6ec6aeac00
https://git.kernel.org/stable/c/30dcfcda8992dc42f18e7d35b6a1fa72372d382d
https://git.kernel.org/stable/c/eff8b7628410cb2eb562ca0d5d1f12e27063733e
https://git.kernel.org/stable/c/2c71811c963b6c310a29455d521d31a7ea6c5b5e
https://git.kernel.org/stable/c/b7a0a63f3fed57d413bb857de164ea9c3984bc4e

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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.