CVE-2026-98615
kernel: eth: fbnic: Set AW_FLUSH_MODE alongside AW_FLUSH when flushing the mailbox
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 21, 2026
Description
A flaw was found in the Linux kernel's fbnic network driver. A local user with administrative privileges could trigger a Denial of Service (DoS) by initiating a reset or teardown of the firmware mailbox. Because the driver fails to properly drain pending write requests from the hardware pipeline during mailbox ring resets, the firmware waits indefinitely for the flush to finish, leading to an unresponsive device.
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 · 4.4CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CWE-459 · Incomplete Cleanup