Allocation of Resources Without Limits or Throttling in Linux kernel - CVE-2026-99278
Published: November 8, 2026
Vulnerability identifier: #VU161881
CSH Severity: Medium
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-99278
CWE-ID: CWE-770
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to exhaust system resources and cause a denial of service.
The vulnerability exists due to resource allocation without effective limits in the Linux kernel ksmbd session management component when handling session setup requests, because the pending setup limit counts only in-progress sessions and excludes successfully authenticated sessions. A remote user can repeatedly complete authentication and retain an unbounded number of valid sessions on a single connection to exhaust system resources and cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-99278
Install security update from vendor's repository.