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CVE-2026-90098

kernel: net: sparx5: fix sleep in atomic context in MAC table access

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Severity

Moderate

Red Hat Product Security

5.5

CVSS 3.1

Review impact separately from score.

Published · September 17, 2026

Updated · October 13, 2026

Description

A flaw was found in the Linux kernel's net: sparx5 driver. The sparx5_set_rx_mode() function attempts to acquire a mutex and poll a register while operating in an atomic context, which is not allowed. This improper operation can lead to a "sleep in atomic context" bug, causing system instability or a kernel panic. This issue ultimately results in a Denial of Service (DoS).

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 · 5.5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CWE-413 · Improper Resource Locking