CVE-2026-74644

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> mm/damon/ops-common: putback folios on invalid migrate nid<br /> <br /> damon_pa_migrate() and damos_va_migrate() isolate folios into a local list<br /> and then call damon_migrate_pages(). When target_nid is invalid<br /> (including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages()<br /> returns early without putting the folios back to the LRU.<br /> <br /> Callers then discard the list head while those folios remain isolated with<br /> an extra reference taken by folio_isolate_lru(). The pages stay off the<br /> LRU for as long as the mapping exists (anon active+inactive counts drop<br /> while RSS does not), and the leftover references can pin the pages after<br /> the mapping is gone.<br /> <br /> Put the folios back on the invalid-nid path so ignored migration requests<br /> still return them to the LRU.