SB2026042144 - Information disclosure in Linux kernel ksmbd
Published: April 21, 2026
Security Bulletin ID
SB2026042144
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Adjecent network
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Information disclosure (CVE-ID: CVE-2026-31410)
CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor
CVSSv4: CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to gain access to potentially sensitive information.
The vulnerability exists due to an error within the smb2_get_info_filesystem() function in fs/smb/server/smb2pdu.c when working with volume identifiers. A remote user can force the ksmbd to return information related to a wrong volume.
Remediation
Install update from vendor's website.