{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "055276c1320564b0192b3af323b8cc67f9b665e1"
            },
            {
              "fixed": "d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df"
            },
            {
              "fixed": "4aaad88f857498ed1294f061f0b25d27ae891c55"
            },
            {
              "fixed": "6182e708e2e1f55521c8a01d7535630ecc2d7df9"
            },
            {
              "fixed": "ff6e88e29965bd06f640e59acdcf0bbf04a7f55c"
            },
            {
              "fixed": "9e6f57107c1886052d4baaa047a2bc3d0e91be5d"
            },
            {
              "fixed": "97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.0.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93118.json"
  },
  "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-\u003eep0_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.",
  "id": "CVE-2026-93118",
  "modified": "2026-09-19T03:30:48.688158614Z",
  "published": "2026-09-17T16:11:25.186Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4aaad88f857498ed1294f061f0b25d27ae891c55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6182e708e2e1f55521c8a01d7535630ecc2d7df9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/97cee53a94be3bd4fd8fbed6071bd2f32dad1ab1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9e6f57107c1886052d4baaa047a2bc3d0e91be5d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d7ae1a48e70e9c3451b7dc7bc3896c82884bc4df"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ff6e88e29965bd06f640e59acdcf0bbf04a7f55c"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93118.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93118"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "usb: gadget: aspeed_udc: check endpoint DMA allocation"
}