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CVE-2026-45910

kernel: RDMA/rxe: Fix race condition in QP timer handlers

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Severity

Moderate

Red Hat Product Security

7

CVSS 3.1

Review impact separately from score.

Published · May 27, 2026

Updated · October 29, 2026

Description

A flaw was found in the Linux kernel's Remote Direct Memory Access (RDMA) RXE component. A race condition exists between the retransmit_timer() and rxe_destroy_qp functions. This can cause a Queue Pair (QP) reference count to underflow, leading to a use-after-free vulnerability. A local attacker could potentially leverage this to cause a denial of service or achieve arbitrary code execution.

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-911 · Improper Update of Reference Count