CVE-2021-47358

kernel: staging: greybus: uart: fix tty use after free

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Severity

Moderate

Red Hat Product Security

4.7

CVSS 3.1

Review impact separately from score.

Published · May 21, 2024

Updated · August 5, 2026

Description

A use-after-free flaw was in the Linux kernel’s Greybus UART driver when a user held a tty open. This flaw allows a local user to crash the system.

Statement

This flaw doesn't affect any versions of Red Hat Enterprise Linux, because the kernel config param, CONFIG_GREYBUS_UART, is disabled.

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

CWE-416 · Use After Free