#VU70482 Heap-based buffer overflow in Linux kernel - CVE-2022-47942

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Main Vulnerability Database Vulnerabilities #VU70482

#VU70482 Heap-based buffer overflow in Linux kernel - CVE-2022-47942

Published: December 26, 2022


Vulnerability identifier: #VU70482
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2022-47942
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Linux kernel
Software vendor:
Linux Foundation

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in set_ntacl_dacl, related to use of SMB2_QUERY_INFO_HE after a malformed SMB2_SET_INFO_HE command. A remote user can send specially crafted data to the ksmbd daemon, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Remediation

Install updates from vendor's website.

External links