CVE-2025-40311
accel/habanalabs: support mapping cb with vmalloc-backed coherent memory
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: accel/habanalabs: support mapping cb with vmalloc-backed coherent memory When IOMMU is enabled, dma_alloc_coherent() with GFP_USER may return addresses from the vmalloc range. If such an address is mapped without VM_MIXEDMAP, vm_insert_page() will trigger a BUG_ON due to the VM_PFNMAP restriction. Fix this by checking for vmalloc addresses and setting VM_MIXEDMAP in the VMA before mapping. This ensures safe mapping and avoids kernel crashes. The memory is still driver-allocated and cannot be accessed directly by userspace.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Dec 8, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
ac0ae6a96aa58eeba4aed97b12ef1dea8c5bf399 < 7ec8ac9f73d4a9438c2186768d6de27ace37531e ac0ae6a96aa58eeba4aed97b12ef1dea8c5bf399 < d1dfe21a332d38a6a09658ec29a55940afb5fe36 ac0ae6a96aa58eeba4aed97b12ef1dea8c5bf399 < 73c7c2cdb442fc4160d2a2a4bfffbd162af06cb9 ac0ae6a96aa58eeba4aed97b12ef1dea8c5bf399 < 513024d5a0e34fd34247043f1876b6138ca52847
Linux / Linux
5.8
References
git.kernel.org: https://git.kernel.org/stable/c/7ec8ac9f73d4a9438c2186768d6de27ace37531e git.kernel.org: https://git.kernel.org/stable/c/d1dfe21a332d38a6a09658ec29a55940afb5fe36 git.kernel.org: https://git.kernel.org/stable/c/73c7c2cdb442fc4160d2a2a4bfffbd162af06cb9 git.kernel.org: https://git.kernel.org/stable/c/513024d5a0e34fd34247043f1876b6138ca52847