{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "af2dfa96c52d042df5deb29fb6e32d3ff4d76a61"
            },
            {
              "fixed": "b6337a08a63eef8efcffe3c01d479badda6bbbdb"
            },
            {
              "fixed": "e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9"
            },
            {
              "fixed": "fc6c3deb1d4c0adebf7dee0b8af4082af3f17690"
            },
            {
              "fixed": "7d881615fb6373f71fc628b3f00186aeca87a3d5"
            },
            {
              "fixed": "25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc"
            },
            {
              "fixed": "b57d1a40bc43258372fa1f4d39305e093947a262"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.18.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72486.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nmailbox: mtk-adsp: fix UAF during device teardown\n\nWhen the SOF audio driver fails to initialize (e.g. firmware boot\ntimeout), its devres unwind frees the snd_sof_dev object that the\nmailbox client (mtk-adsp-ipc) reaches via chan-\u003ecl-\u003erx_callback.\nThe mtk-adsp-mailbox shutdown clears the mailbox command registers\nbut leaves the IRQ line unmasked, so a late interrupt can still\nqueue a threaded handler after mbox_free_channel() had cleared\nchan-\u003ecl, and mbox_chan_received_data() would then trigger UAF:\n\n  BUG: KASAN: slab-use-after-free in sof_ipc3_validate_fw_version\n   sof_ipc3_validate_fw_version\n   sof_ipc3_do_rx_work\n   sof_ipc3_rx_msg\n   mt8196_dsp_handle_request\n   mtk_adsp_ipc_recv\n   mbox_chan_received_data\n   mtk_adsp_mbox_isr\n   irq_thread_fn\n  Freed by task ...:\n   kfree\n   devres_release_all\n   really_probe\n   ... (sof-audio-of-mt8196 probe failure)\n\nThe crash was observed roughly three seconds after the failed probe.\n\ndisable_irq() in shutdown and enable_irq() in startup. disable_irq()\nalso waits for any in-flight interrupts, so by the time\nmbox_free_channel() proceeds to clear chan-\u003ecl no rx_callback can run.\n\nIn addition, request the IRQ with IRQF_NO_AUTOEN so it stays masked\nbetween probe and the first client bind — otherwise an early interrupt\ncan crash on chan-\u003ecl == NULL in mbox_chan_received_data().",
  "id": "CVE-2026-72486",
  "modified": "2026-08-18T03:31:19.178091696Z",
  "published": "2026-08-15T05:57:22.821Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/25d6ea6c76e1b1b7c57337b2f8f1b6fc8d5c52bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/7d881615fb6373f71fc628b3f00186aeca87a3d5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b57d1a40bc43258372fa1f4d39305e093947a262"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b6337a08a63eef8efcffe3c01d479badda6bbbdb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e519c1d8c5efb5cd8d4c5bb3fe39b1bbb812bdb9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fc6c3deb1d4c0adebf7dee0b8af4082af3f17690"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72486.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72486"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "mailbox: mtk-adsp: fix UAF during device teardown"
}