{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a7becb58f6b8a3a3efe5d3acfd52e2c107de6772"
            },
            {
              "fixed": "954ee95a03b4d31d4505591bfaba02c24b75776b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "75977f5f5c4974c72bbedefbf09ad33ebbaa36f1"
            },
            {
              "fixed": "f28a8e1ba4d67a18e4662e5acefd5a4389322366"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "e250b672d40a9e0d97a8895cbb301248bea0fce6"
            },
            {
              "fixed": "695063fc57574dd117b1bc750ca189cf03a2caad"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "dccc0c3ddf8f16071736f98a7d6dd46a2d43e037"
            },
            {
              "fixed": "cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c"
            },
            {
              "fixed": "a24ba0653f7154e671dc8d2bf64682ab2d042792"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.143"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.12.93"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.18.35"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "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-2026-89900.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmedia: cec: core: Fix kmemleak due to missed rc_free_device() call\n\nThe commit dccc0c3ddf8f (\"media: rc: fix race between unregister and\nurb/irq callbacks\") removed the implicit call to rc_free_device() from\nrc_unregister_device(). However, the commit missed to remove the NULL\nassignment of adap-\u003erc that is now causing rc_free_device() to never be\ncalled on an allocated rc device.\n\nkmemleak reports following after e.g. dw-hdmi unbind:\n\nunreferenced object 0xffff00010ac10000 (size 4096):\n  comm \"kworker/u16:1\", pid 39, jiffies 4294897739\n  hex dump (first 32 bytes):\n    20 23 4b 0a 01 00 ff ff 08 00 c1 0a 01 00 ff ff   #K.............\n    08 00 c1 0a 01 00 ff ff 00 00 00 00 00 00 00 00  ................\n  backtrace (crc e11baccc):\n    kmemleak_alloc+0x38/0x44\n    __kmalloc_cache_noprof+0x4a8/0x5e0\n    rc_allocate_device+0x48/0x2a0\n    cec_allocate_adapter+0x3ac/0x800\n    dw_hdmi_cec_probe+0x264/0x634\n    platform_probe+0xc0/0x188\n    really_probe+0x4a4/0x8e0\n    __driver_probe_device+0x2f8/0x440\n    driver_probe_device+0x60/0x160\n    __device_attach_driver+0x1a0/0x2a0\n    bus_for_each_drv+0x100/0x1a0\n    __device_attach+0x174/0x350\n    device_initial_probe+0x90/0xb0\n    bus_probe_device+0x4c/0x120\n    device_add+0xdec/0x116c\n    platform_device_add+0x354/0x598\n\nRemove the assignment of adap-\u003erc to NULL to let cec_delete_adapter()\nfree the allocated rc device after last user of the cec device exits to\nfix the kmemleak.",
  "id": "CVE-2026-89900",
  "modified": "2026-09-18T03:30:57.185891723Z",
  "published": "2026-09-16T10:32:00.289Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/695063fc57574dd117b1bc750ca189cf03a2caad"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/954ee95a03b4d31d4505591bfaba02c24b75776b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a24ba0653f7154e671dc8d2bf64682ab2d042792"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cca2407794795cecff7f8e5f5a79f4ef6b1d6f6c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f28a8e1ba4d67a18e4662e5acefd5a4389322366"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89900.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89900"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "media: cec: core: Fix kmemleak due to missed rc_free_device() call"
}