Riskcovery

CVE-2026-45953

md/raid5: fix IO hang with degraded array with llbitmap

State
Published
Severity
Not scored
Published
May 27, 2026
Updated
May 27, 2026
Reserved
May 13, 2026

Read the record on cve.org

Description

In the Linux kernel, the following vulnerability has been resolved:

md/raid5: fix IO hang with degraded array with llbitmap

When llbitmap bit state is still unwritten, any new write should force rcw, as bitmap_ops->blocks_synced() is checked in handle_stripe_dirtying(). However, later the same check is missing in need_this_block(), causing stripe to deadloop during handling because handle_stripe() will decide to go to handle_stripe_fill(), meanwhile need_this_block() always return 0 and nothing is handled.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 5ab829f1971dc99f2aac10846c378e67fc875abc to before 870b9f15867b0e70f3459ef3974b043e8b229690Affected
  • 5ab829f1971dc99f2aac10846c378e67fc875abc to before 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8Affected
  • 5ab829f1971dc99f2aac10846c378e67fc875abc to before cd1635d844d26471c56c0a432abdee12fc9ad735Affected
LinuxLinux
  • 6.18Affected
  • before 6.18Not affected
  • 6.18.14 through 6.18.*Not affected
  • 6.19.4 through 6.19.*Not affected
  • 7.0 and laterNot affected

References

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