CVE-2023-3777 HIGH

CVE-2023-3777: Use-after-free in Linux kernel's netfilter: nf_tables component

Vendor Linux
Product Kernel
Weakness CWE-416
Published September 6, 2023
Last update February 13, 2025

CVSS base score

7.8/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.

Key dates

02Disclosure timeline

September 6, 2023 CVE published
February 13, 2025 Record updated