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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.

PUBLISHED Reserved 2026-05-13 | Published 2026-05-27 | Updated 2026-05-27 | Assigner Linux

Product status

Default status
unaffected

5ab829f1971dc99f2aac10846c378e67fc875abc (git) before 870b9f15867b0e70f3459ef3974b043e8b229690
affected

5ab829f1971dc99f2aac10846c378e67fc875abc (git) before 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8
affected

5ab829f1971dc99f2aac10846c378e67fc875abc (git) before cd1635d844d26471c56c0a432abdee12fc9ad735
affected

Default status
affected

6.18
affected

Any version before 6.18
unaffected

6.18.14 (semver)
unaffected

6.19.4 (semver)
unaffected

7.0 (original_commit_for_fix)
unaffected

References

git.kernel.org/...c/870b9f15867b0e70f3459ef3974b043e8b229690

git.kernel.org/...c/28ef299e7a5b81817f8ca8297c2ddff28f5da5e8

git.kernel.org/...c/cd1635d844d26471c56c0a432abdee12fc9ad735

cve.org (CVE-2026-45953)

nvd.nist.gov (CVE-2026-45953)

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