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CVE-2026-90337

Estado: RecibidaSin puntuar—

In the Linux kernel, the following vulnerability has been resolved:

serial: core: do fallible allocations before the console can be registered

serial_core_add_one_port() allocates uport->tty_groups after uart_configure_port(), which may register the console. If the allocation fails, the driver unwinds the port while its console remains registered. The earlier uport->name allocation has a related failure path that leaves state->uart_port linked to a port being freed.

Failslab reproduced a NULL dereference in PL011 console output and a KASAN use-after-free in i.MX console output after failed binds.

Leer descripción completaMostrar menos

Allocate the name and tty_groups before linking the port and configuring it. Reserve space for the optional driver attribute group because config_port() may populate uport->attr_group during configuration.

CVSS

NVD no ha asignado puntuación CVSS a esta CVE (habitual desde el cambio de política de abril de 2026).

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Linux — Linux KernelAI

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-90337",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
              "lessThan": "c2aec15f78b2e6ccd9b94216a901248511355982",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "266dcff03eed0050b6af11aaf2a61ab837d7ba3f",
              "lessThan": "1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/tty/serial/serial_core.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.17"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.17",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "7.2.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/tty/serial/serial_core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-17T17:17:32.290",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/1a0e4fbce5d9c1bc179a35a2fd9ed142664299e3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c2aec15f78b2e6ccd9b94216a901248511355982",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nserial: core: do fallible allocations before the console can be registered\n\nserial_core_add_one_port() allocates uport->tty_groups after\nuart_configure_port(), which may register the console. If the allocation\nfails, the driver unwinds the port while its console remains registered.\nThe earlier uport->name allocation has a related failure path that leaves\nstate->uart_port linked to a port being freed.\n\nFailslab reproduced a NULL dereference in PL011 console output and a KASAN\nuse-after-free in i.MX console output after failed binds.\n\nAllocate the name and tty_groups before linking the port and configuring\nit. Reserve space for the optional driver attribute group because\nconfig_port() may populate uport->attr_group during configuration."
    }
  ],
  "lastModified": "2026-09-17T17:17:32.290",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}