CVE-2021-47113 (GCVE-0-2021-47113)

Vulnerability from cvelistv5 – Published: 2024-03-15 20:14 – Updated: 2025-12-18 11:35
VLAI?
Title
btrfs: abort in rename_exchange if we fail to insert the second ref
Summary
In the Linux kernel, the following vulnerability has been resolved: btrfs: abort in rename_exchange if we fail to insert the second ref Error injection stress uncovered a problem where we'd leave a dangling inode ref if we failed during a rename_exchange. This happens because we insert the inode ref for one side of the rename, and then for the other side. If this second inode ref insert fails we'll leave the first one dangling and leave a corrupt file system behind. Fix this by aborting if we did the insert for the first inode ref.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cdd1fedf8261cd7a73c0596298902ff4f0f04492 , < 0df50d47d17401f9f140dfbe752a65e5d72f9932 (git)
Affected: cdd1fedf8261cd7a73c0596298902ff4f0f04492 , < ff8de2cec65a8c8521faade12a31b39c80e49f5b (git)
Affected: cdd1fedf8261cd7a73c0596298902ff4f0f04492 , < dc09ef3562726cd520c8338c1640872a60187af5 (git)
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    Linux Linux Affected: 4.7
Unaffected: 0 , < 4.7 (semver)
Unaffected: 5.10.43 , ≤ 5.10.* (semver)
Unaffected: 5.12.10 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (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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