CVE-2026-53043
CSIRTS triage
- What
- There is a critical vulnerability in the ocfs2/dlm component related to the validation of qr_numregions in the dlm_match_regions function.
- Who is affected
- Deployments using the ocfs2/dlm component are affected.
- Urgency
- Remediation is urgent due to the critical severity and potential for exploitation.
- Action
- Apply the latest patches to mitigate this vulnerability.
AI-assisted analysis generated from the source advisory — verify against the original.
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Exploitation outlook
- Low exploitation risk0.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 41% of all EPSS-scored CVEs.
Advisory coverage (1)
- criticalCVE-2026-53043: ocfs2/dlm: validate qr_numregions in dlm_match_regions()msrc · 2026-06-09
External references
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[](https://www.csirts.com/cve/CVE-2026-53043)