Memory leak in Linux kernel - CVE-2026-90152
Published: September 19, 2026
Vulnerability identifier: #VU151327
CSH Severity: Low
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-90152
CWE-ID: CWE-401
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a memory leak in ksmbd_session_register() when registering an SMB session and xa_store() fails. A remote attacker can initiate SMB session setup requests that result in failed session registration to cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-90152
Install security update from vendor's repository.