CVE-2021-46925

kernel: net/smc: fix kernel panic caused by race of smc_sock

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · February 27, 2024

Updated · November 21, 2025

Description

A flaw was found in the Linux kernel affecting the net/smc Synchronous Message Channel subsystem. This vulnerability is caused by a race condition between the smc_cdc_tx_handler and smc_release functions and can cause kernel panics.

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

There are no known mitigations to the problem and Red Hat recommends to update to the latest software.

CVSS / CWE

CVSS 3.1 · 4.7
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')