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CVE-2026-46181

kernel: RDMA/mlx4: Fix mis-use of RCU in mlx4_srq_event()

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Severity

Important

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 28, 2026

Updated · October 13, 2026

Description

A flaw was found in the Linux kernel's RDMA/mlx4 component. This vulnerability arises from the incorrect use of Read-Copy Update (RCU) in the mlx4_srq_event() function. An attacker could potentially trigger an event before the srq object is fully initialized, leading to a system crash. This could result in a Denial of Service (DoS) for the affected system.

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

CWE-366 · Race Condition within a Thread