{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "4a089668ef22c295ed4997289cc48446c849249c"
            },
            {
              "fixed": "0da1e627f4fc9d0e947fdae90913042120878923"
            },
            {
              "fixed": "f8d7e77d9c621b42a191c67a9b37bec23dc1d555"
            },
            {
              "fixed": "1abe9524dec0fd26e9ceb8d586034d6f68dd8273"
            },
            {
              "fixed": "4e11c45dfdc72ab656067b1df8fcebaf52fd4715"
            },
            {
              "fixed": "d06067ee32620f272cfb80c7bc7c572ad4e74724"
            },
            {
              "fixed": "f9322ac9f862961d7f377b87ec26c8565af7e073"
            },
            {
              "fixed": "4666197ca4f7d80cd3b0292054fe45d76be9ba04"
            },
            {
              "fixed": "95f76f51937fdfb0fc1e14cae606b1ef574a56f3"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.17.0"
            },
            {
              "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": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89892.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: em28xx: defer audio-only extension registration\n\nThe audio-only path registers extensions while probing the primary device.\nFor a dual-TS board, this happens before dev_next is created. The duplicate\ndevice inherits is_audio_only and is then independently inserted into\nem28xx_devlist.\n\nThe list is intended to contain only primary devices: extension operations\nreach the secondary device through dev_next. The independently linked\nsecondary can be freed during disconnect while its list node remains\nreachable, resulting in a use-after-free.\n\nDefer audio-only extension registration to the module-request work item. It\nruns only after probing has completed construction of the optional\nsecondary device, so only the primary is registered and extension callbacks\nreach the secondary through dev_next.",
  "id": "CVE-2026-89892",
  "modified": "2026-09-18T03:30:55.840275577Z",
  "published": "2026-09-16T10:31:54.665Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0da1e627f4fc9d0e947fdae90913042120878923"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1abe9524dec0fd26e9ceb8d586034d6f68dd8273"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4666197ca4f7d80cd3b0292054fe45d76be9ba04"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4e11c45dfdc72ab656067b1df8fcebaf52fd4715"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/95f76f51937fdfb0fc1e14cae606b1ef574a56f3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d06067ee32620f272cfb80c7bc7c572ad4e74724"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f8d7e77d9c621b42a191c67a9b37bec23dc1d555"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f9322ac9f862961d7f377b87ec26c8565af7e073"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89892.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89892"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "media: em28xx: defer audio-only extension registration"
}