Use of Uninitialized Variable in Linux kernel - CVE-2026-93801
Published: September 25, 2026
Vulnerability identifier: #VU152083
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-93801
CWE-ID: CWE-457
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to cause incorrect field values.
The vulnerability exists due to use of uninitialized stack memory in cifs_open_info_data in the SMB client when using affected SMB client operations. A local user can trigger affected SMB client operations to cause incorrect field values.
Affected software
Linux kernel
How to mitigate CVE-2026-93801
Install security update from vendor's repository.
Linux kernel - update to 7.0 rc3