« Volver al listado

CVE-2026-68332

Estado: RecibidaSin puntuar—

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

net: airoha: Fix potential use-after-free in airoha_ppe_deinit()

airoha_ppe_deinit() replaces the NPU pointer with NULL via rcu_replace_pointer() but does not wait for existing RCU readers to exit before calling ppe_deinit() and airoha_npu_put(). This can cause a use-after-free if a reader in an RCU read-side critical section still holds a reference to the NPU when it is freed.

The init path (airoha_ppe_init) already calls synchronize_rcu() after rcu_assign_pointer(), but the deinit path introduced in commit 6abcf751bc08 ("net: airoha: Fix schedule while atomic in airoha_ppe_deinit()") omitted the matching barrier when switching from rcu_read_lock()/rcu_dereference() to rcu_replace_pointer().

Leer descripción completaMostrar menos

Add synchronize_rcu() before ppe_deinit() to ensure all existing RCU readers have completed before the NPU resources are released.

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)

Mostrar
{
  "id": "CVE-2026-68332",
  "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": "72f93dc6d1a6b157e0c3d247085c74935893cca0",
              "lessThan": "46e3bed4b071095ecc9384a7b349e1908728531f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6abcf751bc084804a9e5b3051442e8a2ce67f48a",
              "lessThan": "ad28c4f9e0eae4993cb3fde3e7cea330acd8b97c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6abcf751bc084804a9e5b3051442e8a2ce67f48a",
              "lessThan": "2484568a335cd7bda951c75b3a7d95ea36161ae7",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6.18.6",
              "lessThan": "6.18.42",
              "versionType": "semver"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_ppe.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.19"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.19",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.42",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.1.6",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "status": "unaffected",
              "version": "7.2",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/ethernet/airoha/airoha_ppe.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-08-10T13:20:23.523",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/2484568a335cd7bda951c75b3a7d95ea36161ae7",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/46e3bed4b071095ecc9384a7b349e1908728531f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/ad28c4f9e0eae4993cb3fde3e7cea330acd8b97c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: airoha: Fix potential use-after-free in airoha_ppe_deinit()\n\nairoha_ppe_deinit() replaces the NPU pointer with NULL via\nrcu_replace_pointer() but does not wait for existing RCU readers\nto exit before calling ppe_deinit() and airoha_npu_put(). This can\ncause a use-after-free if a reader in an RCU read-side critical\nsection still holds a reference to the NPU when it is freed.\n\nThe init path (airoha_ppe_init) already calls synchronize_rcu()\nafter rcu_assign_pointer(), but the deinit path introduced in\ncommit 6abcf751bc08 (\"net: airoha: Fix schedule while atomic in\nairoha_ppe_deinit()\") omitted the matching barrier when switching\nfrom rcu_read_lock()/rcu_dereference() to rcu_replace_pointer().\n\nAdd synchronize_rcu() before ppe_deinit() to ensure all existing\nRCU readers have completed before the NPU resources are released."
    }
  ],
  "lastModified": "2026-08-17T06:17:41.317",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}