CVE-2026-74644
In the Linux kernel, the following vulnerability has been resolved: mm/damon/ops-common: putback folios on invalid migrate nid damon_pa_migrate() and damos_va_migrate() isolate folios into a local list and then call damon_migrate_pages(). When target_nid is invalid (including the scheme default NUMA_NO_NODE / -1), damon_migrate_pages() returns early without putting the folios back to the LRU. Callers then discard the list head while those folios remain isolated with an extra reference taken by folio_isolate_lru(). The pages stay off the LRU for as long as the mapping exists (anon active+inactive counts drop while RSS does not), and the leftover references can pin the pages after the mapping is gone. Put the folios back on the invalid-nid path so ignored migration requests still return them to the LRU.
Affected versions
Linux kernel versions
6.12.44,
6.16.4,
6.17
and later are affected. Fixed in
6.18.45,
7.1.9,
7.2
and their respective stable series.
References
3 totalFrequently asked questions
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What is CVE-2026-74644?
CVE-2026-74644 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.12.44 onward and has been patched in 6.18.45, 7.1.9 and 7.2. CVE-2026-74644 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2026-74644?
Yes. CVE-2026-74644 has been patched. Fixed versions include 6.18.45, 7.1.9 and 7.2. If you are running Linux kernel 6.12.44 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2026-74644 actively exploited?
No. CVE-2026-74644 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.