CVE-2026-45953
published 2026-05-27CVE-2026-45953: 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…
medium5.5
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.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| linux | linux | — | — |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < 870b9f15867b0e70f3459ef3974b043e8b229690 | 870b9f15867b0e70f3459ef3974b043e8b229690 |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8 | 28ef299e7a5b81817f8ca8297c2ddff28f5da5e8 |
| linux | linux | >= 5ab829f1971dc99f2aac10846c378e67fc875abc < cd1635d844d26471c56c0a432abdee12fc9ad735 | cd1635d844d26471c56c0a432abdee12fc9ad735 |
| linux | linux_kernel | — | — |