Out-of-bounds read in Linux kernel - CVE-2026-89792
Published: September 17, 2026
Vulnerability identifier: #VU150494
CSH Severity: Low
CVSS v4: 6.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-89792
CWE-ID: CWE-125
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to disclose sensitive information and cause a denial of service.
The vulnerability exists due to out-of-bounds read in the ksmbd share configuration response handling when processing IPC share configuration responses with malformed variable-length fields. A local user can provide a crafted share configuration response to disclose sensitive information and cause a denial of service.
Affected software
Linux kernel
How to mitigate CVE-2026-89792
Install security update from vendor's repository.