CVE-2026-63838 (GCVE-0-2026-63838)
Vulnerability from cvelistv5
Published
2026-07-19 14:04
Modified
2026-07-19 14:04
Severity ?
Summary
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.
References
Impacted products
Vendor Product Version
Linux Linux Version: 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac
Version: 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac
Version: 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac
Version: 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac
Version: 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac
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{
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          "programFiles": [
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              "versionType": "original_commit_for_fix"
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      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
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              "negate": false,
              "operator": "OR"
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      "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 \u003e= 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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T14:04:34.454Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250"
        },
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          "url": "https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72"
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        },
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          "url": "https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5"
        },
        {
          "url": "https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c"
        }
      ],
      "title": "ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]",
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      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-63838",
    "datePublished": "2026-07-19T14:04:34.454Z",
    "dateReserved": "2026-07-19T07:54:57.015Z",
    "dateUpdated": "2026-07-19T14:04:34.454Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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