CVE-2021-47433 (GCVE-0-2021-47433)

Vulnerability from cvelistv5 – Published: 2024-05-22 06:19 – Updated: 2025-12-18 11:37
VLAI?
Title
btrfs: fix abort logic in btrfs_replace_file_extents
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: fix abort logic in btrfs_replace_file_extents Error injection testing uncovered a case where we'd end up with a corrupt file system with a missing extent in the middle of a file. This occurs because the if statement to decide if we should abort is wrong. The only way we would abort in this case is if we got a ret != -EOPNOTSUPP and we called from the file clone code. However the prealloc code uses this path too. Instead we need to abort if there is an error, and the only error we _don't_ abort on is -EOPNOTSUPP and only if we came from the clone file code.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 8fccebfa534c7984864394fa03608305e4929aae , < 0e32a2b85c7d92ece86c17dfef390c5ed79c6378 (git)
Affected: 8fccebfa534c7984864394fa03608305e4929aae , < 0e309e1152fc34ef75991d9d69b165dbf75bf26c (git)
Affected: 8fccebfa534c7984864394fa03608305e4929aae , < 4afb912f439c4bc4e6a4f3e7547f2e69e354108f (git)
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    Linux Linux Affected: 5.10
Unaffected: 0 , < 5.10 (semver)
Unaffected: 5.10.75 , ≤ 5.10.* (semver)
Unaffected: 5.14.14 , ≤ 5.14.* (semver)
Unaffected: 5.15 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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