File-data loss via stale OCFS2 buffer state
Published May 2, 2025 · Updated May 23, 2026
Data corruption in affected Linux kernel versions allows attackers to cause OCFS2 file-data loss via unspecified vectors. After a buffered copy failure, ocfs2_write_end_nolock() zeroes and dirties the page beyond EOF instead of invalidating it, leaving clear page-dirty state with dirty buffers. The loss requires writeback before a later successful write expands i_size, after which copied page data is never written.
Summary
What happened
Data corruption in affected Linux kernel versions allows attackers to cause OCFS2 file-data loss via unspecified vectors. After a buffered copy failure, ocfs2_write_end_nolock() zeroes and dirties the page beyond EOF instead of invalidating it, leaving clear page-dirty state with dirty buffers. The loss requires writeback before a later successful write expands i_size, after which copied page data is never written.
The record
- CVE
- CVE-2023-53081
- Published
- May 2, 2025
- Updated
- May 23, 2026
- Vendor
- The Linux Kernel Organization
- Product
- Linux
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- May 2, 2025CVE publishedPublication date reported by the CVE source.
- May 23, 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.
- Affected versionversion=36ed9e604215f58cec0381ca5fcc6da05f2d87ca
- Affected versionversion=4.14.204 <4.14.312
- Affected versionversion=4.19.155 <4.19.280
- Affected versionversion=4.9.242 <4.10
- Affected versionversion=5.10
- Affected versionversion=5.4.75 <5.4.240
- Affected versionversion=5.9.5 <5.10
- Affected versionversion=6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b <205759c6c18f54659b0b5976b14a52d1b3eb9f57
- Affected versionversion=6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b <47eb055ad3588fc96d34e9e1dd87b210ce62906b
- Affected versionversion=6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b <90410bcf873cf05f54a32183afff0161f44f9715
- Affected versionversion=6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b <91d7a4bd5656552d6259e2d0f8859f9e8cc5ef68
- Affected versionversion=6dbf7bb555981fb5faf7b691e8f6169fc2b2e63b <a9e53869cb43c96d6d851c491fd4e26430ab6ba6
- Affected versionversion=7ce2b16bad2cbfa3fa7bbc42c4448914f639ca47 <c26f3ff4c0be590c1250f945ac2e4fc5fcdc5f45
- Affected versionversion=7ed80e77c908cbaa686529a49f8ae0060c5caee7 <1629f6f522b2d058019710466a84b240683bbee3
- Affected versionversion=acef5107e2eacb08a16ad5db60320d65bd26a6c0
- Affected versionversion=f8a6a2ed4b7d1c3c8631eeb6d00572bc853094a8 <4c24eb49ab44351424ac8fe8567f91ea48a06089
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
Weakness, pattern, technique
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Public exploit references
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Technologies
Your stack
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Your stack
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