CVE-2023-31248 HIGH

CVE-2023-31248: Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability

Vendor Linux
Product Linux Kernel
Weakness CWE-416
Published July 5, 2023
Last update March 5, 2025
View on NVD All CVEs

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

Linux Kernel nftables Use-After-Free Local Privilege Escalation Vulnerability; `nft_chain_lookup_byid()` failed to check whether a chain was active and CAP_NET_ADMIN is in any user or network namespace

Key dates

02Disclosure timeline

July 5, 2023 CVE published
March 5, 2025 Record updated