CVE-2023-42756 MEDIUM

CVE-2023-42756: Kernel: netfilter: race condition between ipset_cmd_add and ipset_cmd_swap

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-362
Published September 28, 2023
Last update November 6, 2025
View on NVD All CVEs

CVSS base score

4.4/10
Attack vector Local
Attack complexity Low
Privileges required High
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A flaw was found in the Netfilter subsystem of the Linux kernel. A race condition between IPSET_CMD_ADD and IPSET_CMD_SWAP can lead to a kernel panic due to the invocation of `__ip_set_put` on a wrong `set`. This issue may allow a local user to crash the system.

Key dates

02Disclosure timeline

September 28, 2023 CVE published
November 6, 2025 Record updated