CVE-2026-93076
Unknown
Description
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.
SeverityUnknown
CVSS—
Exploit probability—
Product
Linux
PublishedSep 17, 2026
First seenSep 17, 2026
How to fix
Update
- Linux Linuxd298a0513aaf7d48f2a9f4a90041de910750cfcf, e0239229931faf9ca3367e3befcf16f77b2cd45b or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | d5406bd458b0ac10b1301a4d5801d85c8f648637 ≤ v < d298a0513aaf7d48f2a9f4a90041de910750cfcf, d5406bd458b0ac10b1301a4d5801d85c8f648637 ≤ v < e0239229931faf9ca3367e3befcf16f77b2cd45b, 7.1 | d298a0513aaf7d48f2a9f4a90041de910750cfcf, e0239229931faf9ca3367e3befcf16f77b2cd45b |
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