CVE-2024-26601

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux0983142c5f17a62055ec851372273c3bc77e4788 < 94ebf71bddbcd4ab1ce43ae32c6cb66396d2d51aaffected
LinuxLinux6bd97bf273bdb4944904e57480f6545bca48ad77 < c1317822e2de80e78f137d3a2d99febab1b80326affected
LinuxLinux6bd97bf273bdb4944904e57480f6545bca48ad77 < 78327acd4cdc4a1601af718b781eece577b6b7d4affected
LinuxLinux6bd97bf273bdb4944904e57480f6545bca48ad77 < ea42d6cffb0dd27a417f410b9d0011e9859328cbaffected
LinuxLinux6bd97bf273bdb4944904e57480f6545bca48ad77 < 6b0d48647935e4b8c7b75d1eccb9043fcd4ee581affected
LinuxLinux6bd97bf273bdb4944904e57480f6545bca48ad77 < c9b528c35795b711331ed36dc3dbee90d5812d4eaffected
LinuxLinux5.10.181 < 5.10.211affected
LinuxLinux5.11affected
LinuxLinux0 < 5.11unaffected
LinuxLinux5.10.211 <= 5.10.*unaffected
LinuxLinux5.15.150 <= 5.15.*unaffected
LinuxLinux6.1.78 <= 6.1.*unaffected
LinuxLinux6.6.17 <= 6.6.*unaffected
LinuxLinux6.7.5 <= 6.7.*unaffected
LinuxLinux6.8 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

CVE Program Container

Additional References

References