CVE-2026-43155

kernel: mux: mmio: fix regmap leak on probe failure

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Severity

Unknown

Red Hat Product Security

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CVSS

Review impact separately from score.

Published · May 6, 2026

Updated · June 28, 2026

Description

A flaw was found in the mux: mmio subsystem of the Linux kernel. During device probing, specifically on probe failures such as probe deferral or driver unbind, a memory-mapped input/output (mmio) regmap resource may not be properly freed. This resource leak can lead to system instability or a Denial of Service (DoS) due to resource exhaustion.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CWE-772 · Missing Release of Resource after Effective Lifetime