{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a93e7b331568227500186a465fee3c2cb5dffd1f"
            },
            {
              "fixed": "63eaa7663335d482a8825c231213e312cacea567"
            },
            {
              "fixed": "df4faf65194ec6c315a59be4c6749eaeb3009243"
            },
            {
              "fixed": "506b43dde5f9ac0068b1360e6b5dbee07fda59fb"
            },
            {
              "fixed": "15340b00e665af805523b08515294a1aa1778151"
            },
            {
              "fixed": "234156f6c6d9ec35dc47abbcc3adc3c79fc6a5ac"
            },
            {
              "fixed": "16695e9059d80ea6661e8399064b0c01f641dd8c"
            },
            {
              "fixed": "ec5bd6731183eb6f619140c9bef2ee11ed818c20"
            },
            {
              "fixed": "67b6fc084b034a91c3ec7907a3fed89a2450f30b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "085d735c858934e5d5bfaedb1fc98bd9135e6ff1"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "4.14.100"
            },
            {
              "fixed": "4.15"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.18.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "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-2026-93054.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nuio: Fix stale info pointer in failed registration path\n\nAfter device_add(), the UIO device is visible to userspace and /dev/uioX\ncan be opened. If a later setup step fails, __uio_register_device()\nunwinds the device but leaves idev-\u003einfo pointing at the caller-owned\nstruct uio_info.\n\nThat is unsafe when an opener races with the failed registration path.\nThe open file keeps a reference to the uio_device, while the caller sees\nregistration failure and may free its struct uio_info. Later file\noperations can then follow idev-\u003einfo and dereference freed memory.\n\nHandle post-device_add() failures like unregister: remove UIO attributes\nwhile the info pointer is still valid, then clear idev-\u003einfo under\ninfo_lock and wake existing waiters/async users before removing the\ndevice and minor. This makes already-open file descriptors observe the\nsame \"device gone\" state as normal uio_unregister_device().",
  "id": "CVE-2026-93054",
  "modified": "2026-09-19T03:30:45.411750190Z",
  "published": "2026-09-17T16:10:43.104Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/15340b00e665af805523b08515294a1aa1778151"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/16695e9059d80ea6661e8399064b0c01f641dd8c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/234156f6c6d9ec35dc47abbcc3adc3c79fc6a5ac"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/506b43dde5f9ac0068b1360e6b5dbee07fda59fb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/63eaa7663335d482a8825c231213e312cacea567"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/67b6fc084b034a91c3ec7907a3fed89a2450f30b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/df4faf65194ec6c315a59be4c6749eaeb3009243"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ec5bd6731183eb6f619140c9bef2ee11ed818c20"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93054.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-93054"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "uio: Fix stale info pointer in failed registration path"
}