CVE-2024-57976

Data corruption via incomplete failed-writeback cleanup

Published Feb 27, 2025 · Updated Aug 5, 2026

Incomplete cleanup in Linux Btrfs allows local users to corrupt file data and interrupt service through buffered writeback. After cow_file_range() partially reserves an extent and returns ENOSPC, its error path clears delalloc state but leaves covered folios dirty without an ordered extent. A low-privileged local account needs write access to a Btrfs filesystem; subsequent writeback can bypass tracked ordering, wedge inode access, or panic the host.

CVSS severity7.8
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incomplete cleanup in Linux Btrfs allows local users to corrupt file data and interrupt service through buffered writeback. After cow_file_range() partially reserves an extent and returns ENOSPC, its error path clears delalloc state but leaves covered folios dirty without an ordered extent. A low-privileged local account needs write access to a Btrfs filesystem; subsequent writeback can bypass tracked ordering, wedge inode access, or panic the host.

The record

CVE
CVE-2024-57976
Published
Feb 27, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-459, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2025CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=2.6.32
  2. Affected versionversion=8b62b72b26bcd72082c4a69d179dd906bcc22200 <06f364284794f149d2abc167c11d556cf20c954b
  3. Affected versionversion=8b62b72b26bcd72082c4a69d179dd906bcc22200 <10b3772292bf1be45604ba83fd9650eb94382e78
  4. Affected versionversion=8b62b72b26bcd72082c4a69d179dd906bcc22200 <692cf71173bb41395c855acbbbe197d3aedfa5d4

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.32; version=8b62b72b26bcd72082c4a69d179dd906bcc22200 <06f364284794f149d2abc167c11d556cf20c954b; version=8b62b72b26bcd72082c4a69d179dd906bcc22200 <10b3772292bf1be45604ba83fd9650eb94382e78; version=8b62b72b26bcd72082c4a69d179dd906bcc22200 <692cf71173bb41395c855acbbbe197d3aedfa5d4

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.8kernel.orgCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-459Incomplete Cleanup
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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