{"api_version":"1","generated_at":"2026-07-23T17:23:40+00:00","cve":"CVE-2026-63838","urls":{"html":"https://cve.report/CVE-2026-63838","api":"https://cve.report/api/cve/CVE-2026-63838.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-63838","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-63838"},"summary":{"title":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais[]","description":"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.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-19 15:16:50","updated_at":"2026-07-19 15:16:50"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72","name":"https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5","name":"https://git.kernel.org/stable/c/a62b3e6e42359a79158c134e3cf5c74fe160c3f5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c","name":"https://git.kernel.org/stable/c/f9e437cddf6cf9e603bdaefe148c1f4792aaf39c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250","name":"https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","name":"https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-63838","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-63838","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac 9f1daac27ca28e98c8c0e4450de42bb68d547250 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac 15e7b2ac2455995a6af02b9d3da7a432837aaf72 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac 134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 547b02f74e4ac1e7d295a6266d5bc93a647cd4ac a62b3e6e42359a79158c134e3cf5c74fe160c3f5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 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original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"63838","cve":"CVE-2026-63838","epss":"0.001680000","percentile":"0.064710000","score_date":"2026-07-20","updated_at":"2026-07-21 00:13:14"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["sound/soc/renesas/rcar/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9f1daac27ca28e98c8c0e4450de42bb68d547250","status":"affected","version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","versionType":"git"},{"lessThan":"15e7b2ac2455995a6af02b9d3da7a432837aaf72","status":"affected","version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","versionType":"git"},{"lessThan":"134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5","status":"affected","version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","versionType":"git"},{"lessThan":"a62b3e6e42359a79158c134e3cf5c74fe160c3f5","status":"affected","version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","versionType":"git"},{"lessThan":"f9e437cddf6cf9e603bdaefe148c1f4792aaf39c","status":"affected","version":"547b02f74e4ac1e7d295a6266d5bc93a647cd4ac","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["sound/soc/renesas/rcar/core.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.6"},{"lessThan":"6.6","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.6.*","status":"unaffected","version":"6.6.141","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.91","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.33","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.10","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.6.141","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.91","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.33","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.10","versionStartIncluding":"6.6","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.6","vulnerable":true}],"negate":false,"operator":"OR"}]}],"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."}],"providerMetadata":{"dateUpdated":"2026-07-19T14:04:34.454Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9f1daac27ca28e98c8c0e4450de42bb68d547250"},{"url":"https://git.kernel.org/stable/c/15e7b2ac2455995a6af02b9d3da7a432837aaf72"},{"url":"https://git.kernel.org/stable/c/134c61925e9e9ee0f4fdbab5c3984d5bb024f5f5"},{"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[]","x_generator":{"engine":"bippy-1.2.0"}}},"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"},"nvd":{"publishedDate":"2026-07-19 15:16:50","lastModifiedDate":"2026-07-19 15:16:50","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"63838","Ordinal":"1","Title":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais","CVE":"CVE-2026-63838","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"63838","Ordinal":"1","NoteData":"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.","Type":"Description","Title":"ASoC: rsnd: Fix potential out-of-bounds access of component_dais"}]}}}