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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2024-26601

ext4: regenerate buddy after block freeing failed if under fc replay

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • 0983142c5f17a62055ec851372273c3bc77e4788 to < 94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aaffected
  • 6bd97bf273bdb4944904e57480f6545bca48ad77 to < c1317822e2de80e78f137d3a2d99febab1b80326affected
  • 6bd97bf273bdb4944904e57480f6545bca48ad77 to < 78327acd4cdc4a1601af718b781eece577b6b7d4affected
  • 6bd97bf273bdb4944904e57480f6545bca48ad77 to < ea42d6cffb0dd27a417f410b9d0011e9859328cbaffected
  • 6bd97bf273bdb4944904e57480f6545bca48ad77 to < 6b0d48647935e4b8c7b75d1eccb9043fcd4ee581affected
  • 6bd97bf273bdb4944904e57480f6545bca48ad77 to < c9b528c35795b711331ed36dc3dbee90d5812d4eaffected
  • 5.10.181 to < 5.10.211affected

Linux Linux

Default version status: affected

  • 5.11affected
  • 0 to < 5.11unaffected
  • 5.10.211 to ≤ 5.10.*unaffected
  • 5.15.150 to ≤ 5.15.*unaffected
  • 6.1.78 to ≤ 6.1.*unaffected
  • 6.6.17 to ≤ 6.6.*unaffected
  • 6.7.5 to ≤ 6.7.*unaffected
  • 6.8 to ≤ *unaffected

References