CVE-2026-52960Network attack vector

Service interruption via leaked CephFS folio references

Published Jun 24, 2026 · Updated Jun 24, 2026

Resource leak in Linux Kernel 6.15 through 7.0.9 allows attackers to interrupt service through CephFS writeback. ceph_process_folio_batch removes folios rejected for writeback from its batch without releasing the references acquired by filemap_get_folios. Exposure requires active CephFS writeback to encounter an unsuitable folio; repeated retained references create memory pressure and affect availability only.

CVSS severity7.5
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource leak in Linux Kernel 6.15 through 7.0.9 allows attackers to interrupt service through CephFS writeback. ceph_process_folio_batch removes folios rejected for writeback from its batch without releasing the references acquired by filemap_get_folios. Exposure requires active CephFS writeback to encounter an unsuitable folio; repeated retained references create memory pressure and affect availability only.

The record

CVE
CVE-2026-52960
Published
Jun 24, 2026
Updated
Jun 24, 2026
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
T1499.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 24, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <7.0.10
  2. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <544576f0f05c4a759806acddfaaeb686f14fb4b0
  3. Affected versionversion=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <86921e890fe1dea9791fb70bec552516fd47716a

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=0 <7.0.10; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <544576f0f05c4a759806acddfaaeb686f14fb4b0; version=1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 <86921e890fe1dea9791fb70bec552516fd47716a

Published CVSS scores

3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.5Linux Kernel CNACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.001OS Exhaustion Flood

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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