CVE-2024-27035

File corruption via misaccounted compressed writeback

Published May 1, 2024 · Updated Aug 5, 2026

Checkpoint persistence failure in affected Linux kernels allows local users to corrupt compressed F2FS file data after sudden power loss. The compressed write-end path decrements ordinary writeback accounting instead of checkpoint-guaranteed accounting, so checkpoint completion can precede persistence of compressed pages. Reachability requires write access to a compression-enabled file on an F2FS volume and a sudden power-off/recovery cycle; the bounded result is persistent file-data corruption.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Checkpoint persistence failure in affected Linux kernels allows local users to corrupt compressed F2FS file data after sudden power loss. The compressed write-end path decrements ordinary writeback accounting instead of checkpoint-guaranteed accounting, so checkpoint completion can precede persistence of compressed pages. Reachability requires write access to a compression-enabled file on an F2FS volume and a sudden power-off/recovery cycle; the bounded result is persistent file-data corruption.

The record

CVE
CVE-2024-27035
Published
May 1, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1485
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 1, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <57e8b17d0522c8f4daf0c4d9969b4d7358033532
  2. Affected versionversion=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <82704e598d7b33c7e45526e34d3c585426319bed
  3. Affected versionversion=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <8a430dd49e9cb021372b0ad91e60aeef9c6ced00
  4. Affected versionversion=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <c3311694b9bcced233548574d414c91d39214684
  5. Affected versionversion=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <e54cce8137258a550b49cae45d09e024821fb28d
  6. Affected versionversion=5.6

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <57e8b17d0522c8f4daf0c4d9969b4d7358033532; version=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <82704e598d7b33c7e45526e34d3c585426319bed; version=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <8a430dd49e9cb021372b0ad91e60aeef9c6ced00; version=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <c3311694b9bcced233548574d414c91d39214684; version=4c8ff7095bef64fc47e996a938f7d57f9e077da3 <e54cce8137258a550b49cae45d09e024821fb28d; version=5.6

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1485Data Destruction

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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