#VU71453 Buffer overflow in Linux kernel - CVE-2022-3077

Vulnerability identifier: #VU71453

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-2022-3077

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 a boundary error in the Linux kernel Intel’s iSMT SMBus host controller driver in the way it handles the I2C_SMBUS_BLOCK_PROC_CALL case. A local user can pass specially crafted data via the  ioctl I2C_SMBUS call, trigger memory corruption and crash the kernel.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Linux kernel: before 5.19, 5.19

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External links
https://github.com/torvalds/linux/commit/690b2549b19563ec5ad53e5c82f6a944d910086e

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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.