CVE-2023-4133

Kernel: cxgb4: use-after-free in ch_flower_stats_cb()

State: Published
Severity: 5.5 Medium
Published: Aug 3, 2023
Updated: Nov 6, 2025
Reserved: Aug 3, 2023

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H	redhat

Weaknesses

CWE-416 Use After Free

Affected Products

Product	Versions
Red Hat Enterprise Linux 8Red Hat	0:4.18.0-553.rt7.342.el8_10 and laterNot affected
Red Hat Enterprise Linux 8Red Hat	0:4.18.0-553.el8_10 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:5.14.0-427.13.1.el9_4 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:5.14.0-427.13.1.el9_4 and laterNot affected
Red Hat Enterprise Linux 6Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 9Red Hat

References

RHSA-2024:2394vendor-advisory
RHSA-2024:2950vendor-advisory
RHSA-2024:3138vendor-advisory
https://access.redhat.com/security/cve/CVE-2023-4133vdb-entry
RHBZ#2221702issue-tracking

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