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CVE-2026-93076

dax/fsdev: clear vmemmap_shift when binding static pgmap

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

dax/fsdev: clear vmemmap_shift when binding static pgmap

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.
Daten sind bereitgestellt durch das CVE Programm von einer CVE Numbering Authority (CNA) (Unstrukturiert).
HerstellerLinux
≫
Produkt Linux
Default Statusunaffected
Version d5406bd458b0ac10b1301a4d5801d85c8f648637
Version < d298a0513aaf7d48f2a9f4a90041de910750cfcf
Status affected
Version d5406bd458b0ac10b1301a4d5801d85c8f648637
Version < e0239229931faf9ca3367e3befcf16f77b2cd45b
Status affected
HerstellerLinux
≫
Produkt Linux
Default Statusaffected
Version 7.1
Status affected
Version 0
Version < 7.1
Status unaffected
Version <= 7.2.*
Version 7.2.6
Status unaffected
Version <= *
Version 7.3-rc1
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 0.16% 0.051
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Es wurden noch keine Informationen zu CWE veröffentlicht.
https://git.kernel.org/stable/c/d298a0513aaf7d48f2a9f4a90041de910750cfcf
https://git.kernel.org/stable/c/e0239229931faf9ca3367e3befcf16f77b2cd45b