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CVE-2026-63838

Estado: Pendiente de análisisSin puntuar—

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

ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]

component_dais[RSND_MAX_COMPONENT] is initially zero-initialized and later populated in rsnd_dai_of_node(). However, the existing boundary check: if (i >= RSND_MAX_COMPONENT)

does not guarantee that the last valid element remains zero. As a result, the loop can rely on component_dais[RSND_MAX_COMPONENT] being zero, which may lead to an out-of-bounds access.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

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-2026-63838",
  "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": "547b02f74e4ac1e7d295a6266d5bc93a647cd4ac",
              "lessThan": "9f1daac27ca28e98c8c0e4450de42bb68d547250",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "547b02f74e4ac1e7d295a6266d5bc93a647cd4ac",
              "lessThan": "15e7b2ac2455995a6af02b9d3da7a432837aaf72",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "547b02f74e4ac1e7d295a6266d5bc93a647cd4ac",
              "lessThan": "134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "547b02f74e4ac1e7d295a6266d5bc93a647cd4ac",
              "lessThan": "a62b3e6e42359a79158c134e3cf5c74fe160c3f5",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "547b02f74e4ac1e7d295a6266d5bc93a647cd4ac",
              "lessThan": "f9e437cddf6cf9e603bdaefe148c1f4792aaf39c",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "sound/soc/renesas/rcar/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": "6.6"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.6",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "sound/soc/renesas/rcar/core.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2026-07-19T15:16:50.583",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: rsnd: Fix potential out-of-bounds access of component_dais[]\n\ncomponent_dais[RSND_MAX_COMPONENT] is initially zero-initialized\nand later populated in rsnd_dai_of_node(). However, the existing boundary check:\n  if (i >= RSND_MAX_COMPONENT)\n\ndoes not guarantee that the last valid element remains zero. As a result,\nthe loop can rely on component_dais[RSND_MAX_COMPONENT] being zero,\nwhich may lead to an out-of-bounds access.\n\nFound by Linux Verification Center (linuxtesting.org) with SVACE."
    }
  ],
  "lastModified": "2026-07-27T17:44:23.777",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}