Description
In the Linux kernel, the following vulnerability has been resolved: md: remove REQ_NOWAIT support from raid1/10/456 REQ_NOWAIT support in md personalities that can block internally is fundamentally incomplete. While reads can avoid some blocking paths, write requests can still encounter cases where one mirror succeeds while another returns -EAGAIN. At that point md cannot distinguish queue pressure from a real device failure, so it can neither record a bad block nor safely retry the write without REQ_NOWAIT, leaving mirrors with divergent data. Rather than continue advertising REQ_NOWAIT support for personalities that cannot implement it correctly, remove it from raid1, raid10 and raid456. Keep REQ_NOWAIT for linear and raid0, which only remap bios to their underlying devices; stacked limits will still clear the feature if any component device lacks REQ_NOWAIT support.
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
f51d46d0e7cb5b8494aa534d276a9d8915a2443d to < ffcc9ea4e4d121c78aef6654a1577aa7d120774daffectedf51d46d0e7cb5b8494aa534d276a9d8915a2443d to < 9bb9504e2d8f3d22ef12d51c333dd499f402dc8faffectedf51d46d0e7cb5b8494aa534d276a9d8915a2443d to < 3fe5b7c9fb72ccc29bfd0f955b124892af7e3674affected39db562b3fedb93978a7e42dd216b306740959f8affected5.15.111 to < 5.16affected
Linux Linux
Default version status: affected
5.17affected0 to < 5.17unaffected6.18.57 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected