CVE-2023-4133 MEDIUM

CVE-2023-4133: Kernel: cxgb4: use-after-free in ch_flower_stats_cb()

Vendor Red Hat
Product Red Hat Enterprise Linux 6
Weakness CWE-416
Published August 3, 2023
Last update November 6, 2025
View on NVD All CVEs

CVSS base score

5.5/10
Attack vector Local
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity None

CVSS vector

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

What the vulnerability does

01Description

A use-after-free vulnerability was found in the cxgb4 driver in the Linux kernel. The bug occurs when the cxgb4 device is detaching due to a possible rearming of the flower_stats_timer from the work queue. This flaw allows a local user to crash the system, causing a denial of service condition.

Key dates

02Disclosure timeline

August 3, 2023 CVE published
November 6, 2025 Record updated