CVE-2023-52479

kernel: ksmbd: fix uaf in smb20_oplock_break_ack

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · February 29, 2024

Updated · October 17, 2026

Description

A use-after-reference vulnerability was found in the Linux kernel, where accessing the opinfo structure after its reference count has been decremented using the opinfo_put() function could allow access to invalid or freed memory.

Statement

Red Hat Enterprise Linux 8 and 9 are not affected by this vulnerability.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-416 · Use After Free