{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-93118",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-93118"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "usb: gadget: aspeed_udc: check endpoint DMA allocation",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: gadget: aspeed_udc: check endpoint DMA allocation\n\nast_udc_probe() allocates a coherent DMA buffer used as the backing store\nfor endpoint buffers. ast_udc_init_ep() derives per-endpoint buffer\npointers from udc->ep0_buf, so a failed allocation is dereferenced during\nprobe.\n\nCheck the allocation before endpoint setup. The existing probe error path\ncalled ast_udc_remove(), which unregisters the gadget unconditionally and\nis not safe before usb_add_gadget_udc() succeeds. Add a local cleanup\nhelper for probe failures so pre-registration failures only unwind the\nresources that were actually initialized.\n\nThis was found by a local static analysis checker for unchecked allocator\nreturns while scanning Linux 6.16. The change was checked by applying it\nto current mainline and by running checkpatch. I do not have access to\nAspeed UDC hardware, so no runtime testing was performed.",
  "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": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93118"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}