CVE Database›Document archive›CVE-2023-28466

CVE-2023-28466

kernel: tls: race condition in do_tls_getsockopt may lead to use-after-free or NULL pointer dereference

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · March 15, 2023

Updated · June 28, 2026

Description

A use-after-free flaw was found in the do_tls_getsockopt function in net/tls/tls_main.c in the Transport Layer Security (TLS) in the Network subcompact in the Linux kernel. This flaw allows an attacker to cause a NULL pointer dereference problem due to a race condition.

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

This flaw can be mitigated by preventing the affected Transport Layer Security (TLS) kernel module from loading during the boot time. Ensure the module is added into the blacklist file.

Refer:  
How do I blacklist a kernel module to prevent it from loading automatically? 
https://access.redhat.com/solutions/41278

CVSS / CWE

CVSS 3.1 · 7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE-416 · Use After Free