SB20260928199 - Interpretation Conflict in Linux kernel erofs
Published: September 28, 2026 Updated: September 30, 2026
Security Bulletin ID
SB20260928199
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) Interpretation Conflict (CVE-ID: CVE-2026-98005)
CWE-ID: CWE-436 - Interpretation Conflict
CVSSv4: 0 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a local user to cause ambiguous inode-sharing cache key interpretation.
The vulnerability exists due to ambiguous key encoding in EROFS inode_share cache key construction when combining domain IDs and inode fingerprints. A local user can provide colliding key components to cause ambiguous inode-sharing cache key interpretation.
Remediation
Install update from vendor's website.