SB2026092559 - Use of Uninitialized Variable in Linux kernel smb client
Published: September 25, 2026
Security Bulletin ID
SB2026092559
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Use of Uninitialized Variable (CVE-ID: CVE-2026-93801)
CWE-ID: CWE-457 - Use of Uninitialized Variable
CVSSv4: 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]
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.
Remediation
Install update from vendor's website.