{
  "cveId": "CVE-2026-89740",
  "url": "https://patchblox.com/security/cve/CVE-2026-89740",
  "summary": "CVE-2026-89740 is fixed in 2 products on 1 platform, first by DEBIAN-CVE-2026-89740, released September 23, 2026. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "serial: imx: serialize imx_uart_ports[] lifetime",
  "description": "In the Linux kernel, the following vulnerability has been resolved:  serial: imx: serialize imx_uart_ports[] lifetime  imx_uart_probe() publishes its devm-allocated port in imx_uart_ports[] before uart_add_one_port() because console setup uses the table. The entry is not cleared when adding the port fails or after removal, leaving a dangling pointer.  A sibling probe can register the shared console through that stale entry. This was reproduced under KASAN on QEMU mcimx6ul-evk by unbinding a sibling UART, unbinding the console UART and rebinding the sibling.  Keep the entry valid through uart_remove_one_port(), then clear it. Protect port addition and removal together with their table updates so sibling operations cannot interleave. Reject an occupied slot rather than clobbering an active port during a duplicate-line probe.",
  "published": "2026-09-11T20:20:04Z",
  "severity": "Moderate",
  "cvss": 5.7,
  "epss": 0.00227,
  "epssPercentile": 0.13513,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-89740",
  "fixes": [
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 13.5 (trixie)",
      "fixedVersion": "6.12.111-1",
      "fix": "DEBIAN-CVE-2026-89740",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89740",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux",
      "release": "Debian 14",
      "fixedVersion": "7.2.6-1",
      "fix": "DEBIAN-CVE-2026-89740",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89740",
      "released": "2026-09-23T19:19:02Z"
    },
    {
      "platform": "linux",
      "product": "linux-6.12",
      "release": "Debian 12.15 (bookworm)",
      "fixedVersion": "6.12.111-1~deb12u1",
      "fix": "DEBIAN-CVE-2026-89740",
      "url": "https://patchblox.com/security/fix/linux/debian-cve-2026-89740",
      "released": "2026-09-23T19:19:02Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-09T01:18:40Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}