CVE-2023-6932 HIGH

CVE-2023-6932: Use-after-free in Linux kernel's ipv4: igmp component

Vendor Linux
Product Kernel
Weakness CWE-416
Published December 19, 2023
Last update May 12, 2026

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 ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1.

Key dates

02Disclosure timeline

December 19, 2023 CVE published
May 12, 2026 Record updated