{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "41a469482de257ea8db43cf74b6311bd055de030"
            },
            {
              "fixed": "f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e"
            },
            {
              "fixed": "e32440fa536af96bdbc61d933a7c3a920b965edc"
            },
            {
              "fixed": "0794ba5332754866b2f1c0cca668775be3ffcf0a"
            },
            {
              "fixed": "189b9dc8c96ec9486482f27c1372b04a7152175e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.13.0"
            },
            {
              "fixed": "6.12.113"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.56"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.10"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98748.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: 8250_bcm7271: fix use-after-free in brcmuart_remove()\n\nbrcmuart_handle_irq() starts priv-\u003ehrt to work around a receive-timeout\nquirk of the 8250 core when hardware flow control is enabled; the timer\ncallback brcmuart_hrtimer_func() dereferences priv.\n\nbrcmuart_remove() cancels the hrtimer before it unregisters the port, so\na receive-timeout interrupt that arrives in between re-arms the timer.\nAfter devm frees priv, the callback runs on freed memory.\n\nUnregister the port before cancelling the hrtimer.\nserial8250_unregister_port() shuts the port down and frees its IRQ, so\nbrcmuart_handle_irq() can no longer restart the timer, and the final\nhrtimer_cancel() drains any timer that was armed before or during the\nunregister.\n\nThis issue was found by an in-house static analysis tool.",
  "id": "CVE-2026-98748",
  "modified": "2026-10-20T02:30:50.912972400Z",
  "published": "2026-10-18T15:47:33.446Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0794ba5332754866b2f1c0cca668775be3ffcf0a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/189b9dc8c96ec9486482f27c1372b04a7152175e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e32440fa536af96bdbc61d933a7c3a920b965edc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f5ce06e648d775cc1ccf66f4f594bb8b559a7d8e"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98748.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98748"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "serial: 8250_bcm7271: fix use-after-free in brcmuart_remove()"
}