CVE-2026-98439
kernel: smb/server: cancel async requests when closing connection
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · October 18, 2026
Updated · October 19, 2026
Description
A flaw was found in the Linux kernel's Server Message Block (SMB) server, ksmbd. When a connection is closed while an asynchronous request is still waiting, the server fails to cancel active requests before waiting for them to complete. A remote client could exploit this flaw to prevent the connection from closing, leading to a system hang or 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 · 6.5CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-459 · Incomplete Cleanup