{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2025-40311",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2025-40311"
  ],
  "published": "2025-12-08T00:47:38Z",
  "summary": "accel/habanalabs: support mapping cb with vmalloc-backed coherent memory",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\naccel/habanalabs: support mapping cb with vmalloc-backed coherent memory\n\nWhen IOMMU is enabled, dma_alloc_coherent() with GFP_USER may return\naddresses from the vmalloc range. If such an address is mapped without\nVM_MIXEDMAP, vm_insert_page() will trigger a BUG_ON due to the\nVM_PFNMAP restriction.\n\nFix this by checking for vmalloc addresses and setting VM_MIXEDMAP\nin the VMA before mapping. This ensures safe mapping and avoids kernel\ncrashes. The memory is still driver-allocated and cannot be accessed\ndirectly by userspace.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-40311"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7ec8ac9f73d4a9438c2186768d6de27ace37531e"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d1dfe21a332d38a6a09658ec29a55940afb5fe36"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/73c7c2cdb442fc4160d2a2a4bfffbd162af06cb9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/513024d5a0e34fd34247043f1876b6138ca52847"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}