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CVE-2026-90029

Estado: RecibidaSin puntuar—

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

usb: storage: realtek_cr: fix use-after-free on disconnect

realtek_cr_destructor() calls timer_delete() before the chip containing the timer is freed. The timer callback may still be running and can rearm itself, resulting in a use-after-free.

Use timer_shutdown_sync() to wait for the callback and prevent further rearming. Do this unconditionally because ss_en may be changed after the timer is armed.

Move timer_setup() into init_realtek_cr() so the timer is initialized before any failure path can invoke the destructor.

Found by static analysis.

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-2026-90029",
  "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": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
              "lessThan": "524d4257f741cd95eb85e2817c9c890928fcfef7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
              "lessThan": "7c4e2f964c65dea4ea22386799d5fb10ef1e3e54",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
              "lessThan": "cae9dbba6adae21a04a3bd045e07b489847ff2c6",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "e931830bb877e2aad9a1be83506f9bdb26c91e4e",
              "lessThan": "4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/usb/storage/realtek_cr.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.1"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "3.1",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/usb/storage/realtek_cr.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-16T11:17:15.953",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4ffee1aebb0c0ffcda9faffd17834ea9b00d42cc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/524d4257f741cd95eb85e2817c9c890928fcfef7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/7c4e2f964c65dea4ea22386799d5fb10ef1e3e54",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/cae9dbba6adae21a04a3bd045e07b489847ff2c6",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: storage: realtek_cr: fix use-after-free on disconnect\n\nrealtek_cr_destructor() calls timer_delete() before the chip containing\nthe timer is freed. The timer callback may still be running and can\nrearm itself, resulting in a use-after-free.\n\nUse timer_shutdown_sync() to wait for the callback and prevent further\nrearming. Do this unconditionally because ss_en may be changed after\nthe timer is armed.\n\nMove timer_setup() into init_realtek_cr() so the timer is initialized\nbefore any failure path can invoke the destructor.\n\nFound by static analysis."
    }
  ],
  "lastModified": "2026-10-03T11:17:45.943",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}