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CVE-2025-68362

Estado: AplazadaSin puntuar—

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

wifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb()

The rtl8187_rx_cb() calculates the rx descriptor header address by subtracting its size from the skb tail pointer. However, it does not validate if the received packet (skb->len from urb->actual_length) is large enough to contain this header.

If a truncated packet is received, this will lead to a buffer underflow, reading memory before the start of the skb data area, and causing a kernel panic.

Add length checks for both rtl8187 and rtl8187b descriptor headers before attempting to access them, dropping the packet cleanly if the check fails.

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-2025-68362",
  "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": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "118e12bf3e4288cf845cd3759bd9d4c99f91aab5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "6a96bd0d94305fd04a6ac64446ec113bae289384",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "e2f3ea15e804607e0a4a34a2f6c331c8750b68bc",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "dc153401fb26c1640a2b279c47b65e1c416af276",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "4758770a673c60d8f615809304d72e1432fa6355",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "638d4148e166d114a4cd7becaae992ce1a815ed8",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "5ebf0fe7eaef9f6173a4c6ea77c5353e21645d15",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "6f7853f3cbe457067e9fe05461f56c7ea4ac488c",
              "lessThan": "b647d2574e4583c2e3b0ab35568f60c88e910840",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.27"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "2.6.27",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "5.10.248",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "status": "unaffected",
              "version": "5.15.198",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.1.160",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "status": "unaffected",
              "version": "6.6.120",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.63",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.17.13",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.2",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "6.19",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/net/wireless/realtek/rtl818x/rtl8187/dev.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T11:15:59.593",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/118e12bf3e4288cf845cd3759bd9d4c99f91aab5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4758770a673c60d8f615809304d72e1432fa6355",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/5ebf0fe7eaef9f6173a4c6ea77c5353e21645d15",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/638d4148e166d114a4cd7becaae992ce1a815ed8",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/6a96bd0d94305fd04a6ac64446ec113bae289384",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b647d2574e4583c2e3b0ab35568f60c88e910840",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/dc153401fb26c1640a2b279c47b65e1c416af276",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/e2f3ea15e804607e0a4a34a2f6c331c8750b68bc",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: rtl818x: rtl8187: Fix potential buffer underflow in rtl8187_rx_cb()\n\nThe rtl8187_rx_cb() calculates the rx descriptor header address\nby subtracting its size from the skb tail pointer.\nHowever, it does not validate if the received packet\n(skb->len from urb->actual_length) is large enough to contain this\nheader.\n\nIf a truncated packet is received, this will lead to a buffer\nunderflow, reading memory before the start of the skb data area,\nand causing a kernel panic.\n\nAdd length checks for both rtl8187 and rtl8187b descriptor headers\nbefore attempting to access them, dropping the packet cleanly if the\ncheck fails."
    }
  ],
  "lastModified": "2026-06-17T09:59:00.123",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}