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CVE-2026-52961: ceph: fix BUG_ON in __ceph_build_xattrs_blob() due to stale blob size

highCVSS 7.1CVE-2026-52961

CSIRTS triage

vendor: Cephproduct: CephOther
What
A bug in the function __ceph_build_xattrs_blob() can lead to a failure due to stale blob size.
Who is affected
Deployments of Ceph that utilize this function.
Urgency
Remediation is important due to the high severity rating.
Action
Apply the latest patch to fix the bug.

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
high — CVSS 7.1
Published
2026-06-09
Exploitation
Not in CISA KEV at last sync

Original advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-52961

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.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2026-52961coverage & exploitation statusNVD · CVE.org

Same CVEs, other sources

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