CVE-2026-93076

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.

• https://git.kernel.org/stable/c/d298a0513aaf7d48f2a9f4a90041de910750cfcf
• https://git.kernel.org/stable/c/e0239229931faf9ca3367e3befcf16f77b2cd45b

Published

Sep 17, 2026

Last Modified

Sep 17, 2026

Status

Received

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