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

CVE-2025-40353
Not available

At a glance

Source
NVD
EPSS
EPSS 0.20 % · percentile 10 ()
State
PUBLISHED
Published
Updated
Assigner
Linux
NVD status
Deferred

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Description

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.

References

European references

CERT-FR advisories

Affected products

ProductVersions
Linux · Linuxaffected 060913999d7a9e50c283fdb15253fc27974ddadc < 5ff5765a1fc526f07d3bbaedb061d970eb13bcf4 ; affected 060913999d7a9e50c283fdb15253fc27974ddadc < 0bbf3fc6e9211fce9889fe8efbb89c220504d617 ; affected 060913999d7a9e50c283fdb15253fc27974ddadc < b98c94eed4a975e0c80b7e90a649a46967376f58
Linux · Linuxaffected 6.11 ; unaffected 0 < 6.11 ; unaffected 6.12.56 ≤ 6.12.* ; unaffected 6.17.6 ≤ 6.17.* ; unaffected 6.18 ≤ *

Sources

SourceLicence
CVE List (CVEProject cvelistV5)CVE Program Terms of Use
EPSS (FIRST.org)FIRST — attribution requested
ENISA EUVDENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feedsPublic domain — this product uses data from the NVD API but is not endorsed or certified by the NVD