Memory leak in Linux kernel - CVE-2026-90163
Published: September 19, 2026
Vulnerability identifier: #VU151322
CSH Severity: Low
CVSS v4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:H/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90163
CWE-ID: CWE-401
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local privileged user to cause a denial of service through resource exhaustion.
The vulnerability exists due to improper resource cleanup in the KSMBD server module initialization error-unwind path when a later module initializer fails. A local privileged user can trigger KSMBD server module initialization that encounters a later initializer failure to cause a denial of service through resource exhaustion.
Affected software
Linux kernel
How to mitigate CVE-2026-90163
Install security update from vendor's repository.