SB2026092881 - Improper Check or Handling of Exceptional Conditions in Linux kernel smb server
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB2026092881
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Improper Check or Handling of Exceptional Conditions (CVE-ID: CVE-2026-98114)
CWE-ID: CWE-703 - Improper Check or Handling of Exceptional Conditions
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause incomplete ACL conversion.
The vulnerability exists due to improper error handling in the ksmbd parse_dacl() function when parsing malformed SMB security descriptors. A remote attacker can submit a malformed security descriptor to cause incomplete ACL conversion.
Remediation
Install update from vendor's website.