CVE-2026-53130
CSIRTS triage
- What
- Rejects s_sys_blocksize smaller than OMFS_DIR_START.
- Who is affected
- Deployments using the omfs filesystem in Linux.
- Urgency
- Immediate remediation is critical due to the critical severity rating.
- Action
- Update to the latest kernel version that resolves this issue.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.13% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 3% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalCVE-2026-53130: fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_STARTmsrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53130)