Copyright © 2012 Red Hat, Inc. All rights reserved. Important 2026-05-08T00:00:00 kernel: iavf: fix PTP use-after-free during reset 7.0 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CWE-825

A flaw was found in the Linux kernel's iavf driver. A race condition exists where the Precision Time Protocol (PTP) worker attempts to access adapter resources that have already been freed during a reset or disable operation. This use-after-free vulnerability can lead to a system crash, resulting in a Denial of Service (DoS).

Red Hat Enterprise Linux 10 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 Affected kernel Red Hat Enterprise Linux 9 Affected kernel-rt https://www.cve.org/CVERecord?id=CVE-2026-43447 https://nvd.nist.gov/vuln/detail/CVE-2026-43447 https://lore.kernel.org/linux-cve-announce/2026050856-CVE-2026-43447-5a2b@gregkh/T