dax/fsdev: clear vmemmap_shift when binding static pgmap
Published Sep 17, 2026
No CVSS score
EPSS 0.20%
Description
Clear pgmap->vmemmap_shift for static DAX devices. When rebinding a static device from device_dax (which may set vmemmap_shift based on alignment) to fsdev_dax, the stale vmemmap_shift persists on the shared pgmap. Explicitly zero it before devm_memremap_pages() so the vmemmap is built for order-0 folios as fsdev requires.
Affected products
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- Version StatusaffectedConstraints
- Version StatusaffectedConstraints
- Version
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- Version 7.1StatusaffectedConstraints-
- Version 0StatusunaffectedConstraints<7.1
- Version 7.2.6StatusunaffectedConstraints<=7.2.*
- Version 7.3-rc1StatusunaffectedConstraints<=*
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
No data.
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Weaknesses (0)
No CWE recorded.
References (3)
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner Linux
Published Sep 17, 2026
Updated Sep 17, 2026
Reserved Sep 17, 2026
Link CVE-2026-93076
CISA Vulnrichment
Updated n/a
ENISA EUVD
EUVD-2026-82186 Assigner Linux
Published Sep 17, 2026
Updated Sep 17, 2026
Exploited since n/a
Link EUVD-2026-82186