CVE-2021-47078

kernel: RDMA/rxe: Clear all QP fields if creation failed

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Severity

Moderate

Red Hat Product Security

4.4

CVSS 3.1

Review impact separately from score.

Published · March 1, 2024

Updated · November 21, 2025

Description

A use-after-free vulnerability was found in the Linux kernel, affecting the RDMA/rxe component. This issue occurs because the rxe_qp_do_cleanup() function depends on valid pointer values in the RXE QP structure. However, if that structure fails to initialize properly, it may populate with garbage values.

Statement

Red Hat Enterprise Linux 8 and 9 are not affected, as this vulnerability was already addressed in a previous release.

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 · 4.4
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

CWE-416 · Use After Free