CVE-2023-4881 Information

Description

A stack based out-of-bounds write flaw was found in the netfilter subsystem in the Linux kernel. If the expression length is a multiple of 4 (register size) the nft_exthdr_eval family of functions writes 4 NULL bytes past the end of the regs argument leading to stack corruption and potential information disclosure or a denial of service.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Reference

https://access.redhat.com/security/cve/CVE-2023-4881 https://bugzilla.redhat.com/show_bug.cgi?id=2238312

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.1