Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-05-06T00:00:00 kernel: team: avoid NETDEV_CHANGEMTU event when unregistering slave 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CWE-821

A flaw was found in the Linux kernel's team driver. A local user can exploit this vulnerability by manipulating network devices and namespaces. Specifically, when a slave device is unregistered from a team interface while a NETDEV_CHANGEMTU event is pending, it can lead to a deadlock or resource exhaustion. This can result in a denial of service, making the system unresponsive.

Red Hat Enterprise Linux 10 Not affected kernel Red Hat Enterprise Linux 6 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel Red Hat Enterprise Linux 7 Not affected kernel-rt Red Hat Enterprise Linux 8 Not affected kernel Red Hat Enterprise Linux 8 Not affected kernel-rt Red Hat Enterprise Linux 9 Fix deferred kernel Red Hat Enterprise Linux 9 Fix deferred kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43234 https://nvd.nist.gov/vuln/detail/CVE-2026-43234 https://lore.kernel.org/linux-cve-announce/2026050657-CVE-2026-43234-2acb@gregkh/T