CVE-2021-47448

kernel: mptcp: fix possible stall on recvmsg()

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Severity

Moderate

Red Hat Product Security

6.5

CVSS 3.1

Review impact separately from score.

Published · May 22, 2024

Updated · August 19, 2026

Description

A flaw was found in the Multipath TCP (mptcp) implementation within the Linux kernel. This vulnerability could allow a local attacker to cause a system stall by exploiting an issue in the recvmsg() function. This could lead to a Denial of Service (DoS) condition, making the system unresponsive.

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 · 6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')