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CVE-2026-89721

Estado: RecibidaSin puntuar—

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

phy: rockchip-samsung-dcphy: fix out-of-range max_register

The PHY register block is 64KB, so with a register stride of 4 the last accessible register sits at offset 0xfffc. max_register names 0x10000, one register past the end of the mapping: dumping the registers through the regmap debugfs interface reads beyond the ioremapped region and oopses on the unmapped page. The oops fires with the regmap lock held, so later PHY operations deadlock.

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-2026-89721",
  "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": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
              "lessThan": "14afe18655c0951f4f85898f761bf92264e65ccd",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
              "lessThan": "c1a62f9dcf531d56c56da2e4435386b6d264c69f",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "b2a1a2ae7818c9d8da12bf7b1983c8b9f5fb712b",
              "lessThan": "4486e75ba647bd8b98fc1f053101b40caceeed4b",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.18.50",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.2.4",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "status": "unaffected",
              "version": "7.3-rc1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/phy/rockchip/phy-rockchip-samsung-dcphy.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-09-11T20:20:01.090",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/14afe18655c0951f4f85898f761bf92264e65ccd",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/4486e75ba647bd8b98fc1f053101b40caceeed4b",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/c1a62f9dcf531d56c56da2e4435386b6d264c69f",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Received",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nphy: rockchip-samsung-dcphy: fix out-of-range max_register\n\nThe PHY register block is 64KB, so with a register stride of 4 the\nlast accessible register sits at offset 0xfffc. max_register names\n0x10000, one register past the end of the mapping: dumping the\nregisters through the regmap debugfs interface reads beyond the\nioremapped region and oopses on the unmapped page. The oops fires\nwith the regmap lock held, so later PHY operations deadlock."
    }
  ],
  "lastModified": "2026-09-11T20:20:01.090",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}