{"cve":"CVE-2026-46017","nvd":{"published":"2026-05-27T14:17:20.133","modified":"2026-06-17T10:52:54.363","status":"Analyzed","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nmm: fix deferred split queue races during migration\n\nmigrate_folio_move() records the deferred split queue state from src and\nreplays it on dst.  Replaying it after remove_migration_ptes(src, dst, 0)\nmakes dst visible before it is requeued, so a concurrent rmap-removal path\ncan mark dst partially mapped and trip the WARN in deferred_split_folio().\n\nMove the requeue before remove_migration_ptes() so dst is back on the\ndeferred split queue before it becomes visible again.\n\nBecause migration still holds dst locked at that point, teach\ndeferred_split_scan() to requeue a folio when folio_trylock() fails. \nOtherwise a fully mapped underused folio can be dequeued by the shrinker\nand silently lost from split_queue.\n\n[ziy@nvidia.com: move the comment]","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H","score":4.7},"cwes":["CWE-362"],"references":["https://git.kernel.org/stable/c/3bac01168982ec3e3bf87efdc1807c7933590a85","https://git.kernel.org/stable/c/cbf75cf212ee6e499abc1757fb4b5ae6d70ed0aa"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-46017","score":0.00105,"percentile":0.01038,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}