CVE-2024-26601 (GCVE-0-2024-26601)

Vulnerability from cvelistv5 – Published: 2024-02-24 14:56 – Updated: 2025-05-04 08:52
VLAI?
Title
ext4: regenerate buddy after block freeing failed if under fc replay
Summary
In the Linux kernel, the following vulnerability has been resolved: ext4: regenerate buddy after block freeing failed if under fc replay This mostly reverts commit 6bd97bf273bd ("ext4: remove redundant mb_regenerate_buddy()") and reintroduces mb_regenerate_buddy(). Based on code in mb_free_blocks(), fast commit replay can end up marking as free blocks that are already marked as such. This causes corruption of the buddy bitmap so we need to regenerate it in that case.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 0983142c5f17a62055ec851372273c3bc77e4788 , < 94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51a (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < c1317822e2de80e78f137d3a2d99febab1b80326 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < 78327acd4cdc4a1601af718b781eece577b6b7d4 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < ea42d6cffb0dd27a417f410b9d0011e9859328cb (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < 6b0d48647935e4b8c7b75d1eccb9043fcd4ee581 (git)
Affected: 6bd97bf273bdb4944904e57480f6545bca48ad77 , < c9b528c35795b711331ed36dc3dbee90d5812d4e (git)
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    Linux Linux Affected: 5.11
Unaffected: 0 , < 5.11 (semver)
Unaffected: 5.10.211 , ≤ 5.10.* (semver)
Unaffected: 5.15.150 , ≤ 5.15.* (semver)
Unaffected: 6.1.78 , ≤ 6.1.* (semver)
Unaffected: 6.6.17 , ≤ 6.6.* (semver)
Unaffected: 6.7.5 , ≤ 6.7.* (semver)
Unaffected: 6.8 , ≤ * (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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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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