#VU92059 Improper error handling in Linux kernel - CVE-2021-47153

Vulnerability identifier: #VU92059

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-2021-47153

CWE-ID: CWE-388

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 error handling within the i801_check_post() function in drivers/i2c/busses/i2c-i801.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/f9469082126cebb7337db3992d143f5e4edfe629
https://git.kernel.org/stable/c/09c9e79f4c10cfb6b9e0e1b4dd355232e4b5a3b3
https://git.kernel.org/stable/c/dfa8929e117b0228a7765f5c3f5988a4a028f3c6
https://git.kernel.org/stable/c/c70e1ba2e7e65255a0ce004f531dd90dada97a8c
https://git.kernel.org/stable/c/04cc05e3716ae31b17ecdab7bc55c8170def1b8b
https://git.kernel.org/stable/c/b523feb7e8e44652f92f3babb953a976e7ccbbef
https://git.kernel.org/stable/c/1f583d3813f204449037cd2acbfc09168171362a
https://git.kernel.org/stable/c/e4d8716c3dcec47f1557024add24e1f3c09eb24b

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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.