CVE-2026-93076
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | d5406bd458b0ac10b1301a4d5801d85c8f648637 < d298a0513aaf7d48f2a9f4a90041de910750cfcf | affected |
| Linux | Linux | d5406bd458b0ac10b1301a4d5801d85c8f648637 < e0239229931faf9ca3367e3befcf16f77b2cd45b | affected |
| Linux | Linux | 7.1 | affected |
| Linux | Linux | 0 < 7.1 | unaffected |
| Linux | Linux | 7.2.6 <= 7.2.* | unaffected |
| Linux | Linux | 7.3-rc1 <= * | unaffected |
Weaknesses
References
- https://git.kernel.org/stable/c/d298a0513aaf7d48f2a9f4a90041de910750cfcf
- https://git.kernel.org/stable/c/e0239229931faf9ca3367e3befcf16f77b2cd45b
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