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CVE-2025-40353

arm64: mte: Do not warn if the page is already tagged in copy_highpage()

In the Linux kernel, the following vulnerability has been resolved:

arm64: mte: Do not warn if the page is already tagged in copy_highpage()

The arm64 copy_highpage() assumes that the destination page is newly
allocated and not MTE-tagged (PG_mte_tagged unset) and warns
accordingly. However, following commit 060913999d7a ("mm: migrate:
support poisoned recover from migrate folio"), folio_mc_copy() is called
before __folio_migrate_mapping(). If the latter fails (-EAGAIN), the
copy will be done again to the same destination page. Since
copy_highpage() already set the PG_mte_tagged flag, this second copy
will warn.

Replace the WARN_ON_ONCE(page already tagged) in the arm64
copy_highpage() with a comment.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version 060913999d7a9e50c283fdb15253fc27974ddadc
Version < 5ff5765a1fc526f07d3bbaedb061d970eb13bcf4
Status affected
Version 060913999d7a9e50c283fdb15253fc27974ddadc
Version < 0bbf3fc6e9211fce9889fe8efbb89c220504d617
Status affected
Version 060913999d7a9e50c283fdb15253fc27974ddadc
Version < b98c94eed4a975e0c80b7e90a649a46967376f58
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 6.11
Status affected
Version 0
Version < 6.11
Status unaffected
Version <= 6.12.*
Version 6.12.56
Status unaffected
Version <= 6.17.*
Version 6.17.6
Status unaffected
Version <= *
Version 6.18
Status unaffected
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.02% 0.058
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
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