CVE-2026-90166
kernel: smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()
Severity
ModerateRed Hat Product Security
CVSS 3.1
Review impact separately from score.
Published · September 17, 2026
Updated · October 13, 2026
Description
A flaw was found in the ksmbd (Server Message Block) server component of the Linux kernel. A remote attacker could exploit a null-pointer dereference vulnerability within the ksmbd_ipc_tree_connect_request() function. This issue arises when the system attempts to access a memory location that has not been properly allocated, leading to a system crash. Successful exploitation could result in a Denial of Service (DoS) for the affected system.
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 · 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-476 · NULL Pointer Dereference