CVE-2026-80528: ceph: avoid fs reclaim while using current->journal_info

mediumCVSS 4.7CVE-2026-80528

CSIRTS triage

vendor: Ceph product: Ceph Denial of service

What: Ceph filesystem operations trigger filesystem reclaim while holding journal_info, causing potential deadlock.
Who is affected: Ceph deployments with active I/O operations.
Urgency: Medium priority; can cause system hangs and service unavailability.
Action: Upgrade to patched Ceph release.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source: Microsoft Security Response Center (INTL · vendor-psirt · site)
Severity: medium — CVSS 4.7
Published: 2026-08-11
Exploitation: Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80528

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-805280.52% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 42% of all EPSS-scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-80528	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

Recent advisories for ceph

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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