CVE-2023-31248

HighCVSS 7.8/10Last modified Jun 17, 2026

Description

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

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-416

Affected software

VendorProductVersions
LinuxLinux Kernelv5.9-rc1

References

Timeline

Published
Jul 5, 2023
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2023-31248: High severity, CVSS 7.8 | Vulnix